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Doping Irregularities at the Olympics (438)

Athlete	Nation(s)	Sport(s)	Era	Notes
Fritz Aanes	NOR	WRE	2000—2004	2000 Sydney – Greco-Roman, 85 kg. Class (4). Nandrolone (anabolic steroid).
Mariya Abakumova	RUS	ATH	2008—2012	2008 Beijing – Javelin (2) - Turinabol (retest)
Mariya Abakumova	RUS	ATH	2008—2012	2012 London - Javelin (10) Retroactively stripped of all her results from 2008 Olympics to end of 2012 London Olympics partly due to positive test for Turinabol at 2011 World Championships.
Elvan Abeylegesse	TUR	ATH	2004—2008	Beijing 2008 – 5000m (2) 10000m (2) Retroactively stripped of all her results from 2007 to 2009 after testing positive at the 2007 World Championships. Stanozolol (retest)
Inga Abitova	RUS	ATH	2008	2008 Beijing – 10000m (6) - Turinabol (retest)
Alen Abramović	CRO	CCS	2006	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Christian Ahlmann	GER	EQU	2004—2016	2008 Beijing – Jumping / Team Jumping (Ind (=28 QR) / Team (=5)). Capsaicin. Horse tested positive for substance.
Khadzhimurat Akkayev	RUS	WLT	2004—2008	2012 London – 105kg (DNS) - Turinabol (retest)
Khadzhimurat Akkayev	RUS	WLT	2004—2008	2008 Beijing – 94kg (3) - Turinabol (retest)
Denis Alekseyev	RUS	ATH	2008—2012	2008 Beijing – 400m (5 h1 r1/3) / 4 x 400m (3) - Turinabol (retest)
Denis Alekseyev	RUS	ATH	2008—2012	2012 London – 4 x 400m (5) - Retroactively stripped of all his results from 2008 to 2013 due to ban for positive test at 2008 Olympics
Misha Aloyan	RUS	BOX	2012—2016	2016 Rio – 52kg (2) - Tuaminoheptane
Anis Ananenko	BLR	ATH	2012	2012 London - 800m (7 h2 r1/3) - Turinabol (retest)
Adrián Annus	HUN	ATH	1996—2004	2004 Athínai – Hammer Throw (1). Tampering with urine sample, and then refusing to submit to a second test.
Lance Armstrong	USA	CYC	1992—2000	2000 Sydney – ITT (3) Retroactively stripped of all his results from 1998 to 2005 for a multitude of violations. Disqualified by IOC in 2013
Izzat Artykov	KGZ	WLT	2016	2016 Rio – 69kg (3) – Strychnine
Yelena Arzhakova	RUS	ATH	2012	2012 London – 800m (7) - Retroactively stripped of all her results from 2011 to 2013 for irregularities on her Athlete Biological Passport
Apti Aukhadov	RUS	WLT	2012	2012 London – 85kg (2) - Turinabol (retest)
Bashir Babajanzadeh	IRI	WRE	2012—2016	2016 Rio – +130kg GR (10) - Results voided from May 2016 as a result of a doping violation prior to the Games - Testosterone
Nicklas Bäckström	SWE	ICH	2010—2014	2014 Sochi – Men (2) – Pseudoephedrine - Received public warning and allowed to keep medal.
Oleksandr Bahach	UKR	ATH	1996	2000 Sydney – Out-of-competition positive. Shot Put (DNS). Anabolic steroids.
Bakhvain Buyadaa	MGL	JUD	1972—1976	1972 München – 63 kg. Class (2). Dianabol (anabolic steroid).
Sergey Bakulin	RUS	ATH	2012	London 2012 – 50km walk (6) - Retroactively stripped of all his results from 2009 to 2013 for irregularities on his Athlete Biological Passport
Dominik Baldauf	AUT	CCS	2018	2018 Pyeonchang - Sprint (35) 15km (42) 4 x 10 km (13) Team Sprint (16) - lost all results from December 2016 to March 5, 2019 after it was found he used a prohibited method (blood doping) between those dates
Musaeb Abdulrahman Balla	QAT	ATH	2012—2016	2016 Rio - 800m (DNS) - Possession of illegal substances in June 2016
Khasan Baroyev	RUS	WRE	2004—2012	2008 Beijing - Greco-Roman 120kg (2) - Turinabol (retest)
Yarelis Barrios	CUB	ATH	2008—2012	2008 Beijing – Discus (2) - Acetazolamide (retest)
Michael Barry	CAN	CYC	1996—2008	2004 Athens – RR (DNF) Retroactively stripped of all his results from 2003 to 2006 for a multitude of violations
Dieter Baumann	GER FRG	ATH	1988—1996	2000 Sydney – Out-of-competition positive. Distance races (DNS). Nandrolone (anabolic steroid).
Alain Baxter	GBR	ASK	1998—2006	2002 Salt Lake City – Slalom (3). Methamphetamine (stimulant).
Ludger Beerbaum	GER FRG	EQU	1988—2016	2004 Athínai – Jumping / Team Jumping (1). Betamethasone. Disqualified because his horse, Goldfever, was found to have a doping positive. Germany moved from 1st to 3rd but Beerbaum not awarded a medal.
Yevgeny Belov	RUS	CCS	2014	2014 Sochi – 15Km (25), 30km Skiathlon (19) - Involved in scheme involving switched samples
Maksim Belugin	RUS	BOB	2014	2014 Sochi - 2 man (4) 4 man (4) - Involved in scheme involving switched samples
Olha Beresneva	UKR	SWI	2000—2012	2012 London – 10km open water (7) – EPO (retest)
Mariya Bespalova	RUS	ATH	2012	2012 London – Hammer (10) - Turinabol (retest)
Madina Biktagirova	BLR RUS EUN	ATH	1992—2000	1992 Barcelona – Marathon (4). Norephedrine (stimulant).
Yuriy Bilonoh	UKR	ATH	2000—2008	2004 Athínai – Shot Put (1). Oxandrolone metabolite (anabolic steroid). Disqualified in December 2012 after re-testing of samples from the 2004 Olympics.
Mete Binay	TUR	WLT	2012	2012 London - 69kgs (6) Disqualified in July 2020 after re-analysis of London samples showed presence of Stanazolol metabolites.
Blagoy Blagoev	BUL	WLT	1976—1980	1976 Montréal – 82½ kg. Class (2). Anabolic steroid.
Liudmyla Blonska	UKR	ATH	2008	2008 Beijing – Long jump / Heptathlon (LJ (3QR) / Hep (2)). Methyltestosterone (anabolic steroid). Second doping offense, and given a lifetime ban.
Valeriy Borchin	RUS	ATH	2008—2012	2012 London – 50km walk (DNF) - Retroactively stripped of all his results from 2009 to 2012 for irregularities on his Athlete Biological Passport
Abderrahhime Bouramdane	MAR	ATH	2008—2012	2012 London – Marathon (DNF) - Retroactively stripped of all his results from 2011 to 2015 for irregularities on his Athlete Biological Passport
Borut Božič	SLO	CYC	2008—2012	2012 London - road race (46) - lost all results from 2011 and 2012 due to use of -prohibited methods and/or prohibited substances
Kerrith Brown	GBR	JUD	1984—1988	1988 Seoul – 71 kg. Class (3). Furosemide (Lasix) (diuretic, masking agent).
Gamze Bulut	TUR	ATH	2012	2012 London – 1500m (2) Retroactively stripped of all her results from 2010 to 2016 for irregularities on her Athlete Biological Passport
Yolanda Caballero	COL	ATH	2012	2012 London – Marathon (DNF) - Retroactively stripped of all her results from 2011 to 2015 for irregularities on her Athlete Biological Passport
Aslı Çakır	TUR	ATH	2008—2012	2012 London – 1500m (1) Retroactively stripped of all her results from 2010 to 2013 for irregularities on her Athlete Biological Passport
María Luisa Calle	COL	CTR/CYC	2000—2012	2004 Athínai – Points Race (3). Heptaminol (stimulant). Initially disqualified but this was later overturned by the Court of Arbitration for Sport.
Mark Cameron	USA	WLT	1976	1976 Montréal – 110 kg. Class (5). Anabolic steroid.
Cao Lei	CHN	WLT	2008	2008 Beijing – 75kg (1) - GHRP-2 (retest)
Dean Capobianco	AUS	ATH	1992—1996	1996 Atlanta – 200 metres (7 h2 r2/4). Anabolic steroid. DQed prior to the Olympics, but allowed to compete on appeal. Later retroactively DQed when that decision was determined to be a mistake.
Nesta Carter	JAM	ATH	2008—2012	2008 Beijing – 4 x 100m (1) - Methylhexanamine (retest)
Paul Cerutti	MON	SHO	1972—1976	1976 Montréal – Trap Shooting (43). Amphetamines (stimulant).
Yuliya Chekalyova	RUS	CCS	2014	2014 Sochi – 10km (11) 30km (31) Skiathlon (15) Women’s 4 x 5km relay (6) - Involved in scheme involving switched samples
Chen Qian	CHN	MOP	2008—2016	Rio 2016 - Women (4) - Diuretic
Chen Xiexia	CHN	WLT	2008	2008 Beijing – 48kg (1) - GHRP-2 (retest)
Chen Xinyi	CHN	SWI	2016	2016 Rio – 50m free (DNS), 100 B/fly (4) – Hydrochlorothiazide
Yuliya Chermoshanskaya	RUS	ATH	2008	2008 Beijing – 200m (5 h1 r3/4) / 4 x 100m (1) - Turinabol (retest)
Tatyana Chernova	RUS	ATH	2008—2012	2008 Beijing – Heptathlon (3) - Turinabol (retest)
Tatyana Chernova	RUS	ATH	2008—2012	2012 London – Heptathlon (3) - Turinabol (retest) Retroactively stripped of all her results from 2009 to 2013 for irregularities on her Athlete Biological Passport
Anna Chicherova	RUS	ATH	2004—2012	2008 Beijing – High Jump (3) - Turinabol (retest)
Zulfiya Chinshanlo	KAZ	WLT	2010—2012	2012 London – 53kg (1) - Oxandrolone and Stanozolol (retest)
Sergey Chudinov	RUS	SKE	2010—2014	2014 Sochi – Skeleton (5) - Involved in scheme involving switched samples
Dragomir Cioroslan	ROU	WLT	1976—1984	1976 Montréal – 75 kg. Class (5). Fencanfamine (stimulant).
Anatolii Cîrîcu	MDA	WLT	2012	2012 London – 94kg (3) - Turinabol (retest)
Mickey Coll	PUR	BAS	1972	1972 München – Basketball (6). Ephedrine (stimulant).
Andrea Collinelli	ITA	CTR	1996	2000 Sydney – Out-of-competition positive. Individual Pursuit (DNS). Increased hematocrit levels (>50.0).
Kissya Costa	BRA	ROW	2012	2012 London – Single sculls (18). Erythropoietin (EPO).
Crystal Cox	USA	ATH	2004	2004 Athínai – 4x400 metre relay (4x400 (1)). Admitted in 2010 to systematic doping with anabolic steroids from 2001-04.
Florin Croitoru	ROU	WLT	2010—2012	2012 London - 56kg (9) - dehydrochlormethyltestosterone, metenolone and stanozolol (retest)
Sean Crooks	CAN	CCS	2006	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Kálmán Csengeri	HUN	WLT	1988	1988 Seoul – 75 kg. Class (4). Stanozolol (anabolic steroid).
Ali Dad	AFG	WRE	1988	1988 Seoul – Freestyle, 62 kg. Class (Eliminated 3rd Round). Furosemide (Lasix) (diuretic, masking agent).
Meline Daluzyan	ARM	WLT	2012	2012 London - 69kg (DNF) - Stanozolol and Turinabol (retest)
Silviya Danekova	BUL	ATH	2012—2016	2016 Rio – 3000m SC (DNS) - EPO (Pre-Olympic testing)
Ashot Danielyan	ARM	WLT	1996—2004	2000 Sydney – Unlimited Class (3). Stanozolol (anabolic steroid).
Olga Danilova	RUS EUN	CCS	1992—2002	2002 Salt Lake City – 10 km. / Pursuit / 30 km. (10K (2) / Pursuit (1) / 30K (7)). Darbopoietin (EPO analog).
Bonnie Dasse	USA	ATH	1988—1992	1992 Barcelona – Shot Put (14 QR / DNQ). Clenbuterol (ß-agonist).
Nataliya Davydova	UKR	WLT	2008	2008 Beijing – 69kg (3) - Turinabol (retest)
Mary Decker-Slaney	USA	ATH	1984—1996	1996 Atlanta – Tested positive on 17 June 1996, for which she was suspended retroactively on 16 September 1997.
Nick Delpopolo	USA	JUD	2012—2016	2012 London – Lightweight (=7th). Marijuana.
Andrey Demanov	RUS	WLT	2012	2012 London – 94kg (4) - Turinabol (retest)
Rick DeMont	USA	SWI	1972	1972 München – 400 metre Freestyle (1). Ephedrine (stimulant).
Stefan Denifl	AUT	CYC	2016	2016 Rio – Road Race (DNF) - lost all results from June 1, 2014 to March 5, 2019 after it was found he used a prohibited method between June 2014 and the end of 2018.
Betlhem Desalegn Belayneh	UAE	ATH	2012—2016	2016 Rio – 1500m (DNS) Retroactively stripped of all her results from 2014 to 2016 for irregularities on her Athlete Biological Passport
Pigi Devetzi	GRE	ATH	2004—2008	2008 Beijing – Triple Jump (3) - Retroactively stripped of all her results since the 2007 World Championships after testing positive for Stanozolol.
Vadim Devyatovsky	BLR	ATH	2004—2008	2008 Beijing – Hammer Throw (3). Testosterone (anabolic steroid). Medal originally removed, but later overturned on appeal to the Court of Arbitration for Sport.
Roland Diethart	AUT	CCS	2006	2006 Torino – 4x10 km. relay (DNF). IOC Disciplinary investigation. Found to have been involved in an elaborate blood doping scheme.
Bahar Doğan	TUR	ATH	2008—2012	2012 London – Marathon (62) - Retroactively stripped of all her results from 2011 to 2013 for irregularities on his Athlete Biological Passport
Sergey Dolidovich	BLR	CCS	1994—2018	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Marta Domínguez	ESP	ATH	1996—2012	2012 London – 3000m SC (12) - Retroactively stripped of all her results from 2009 to 2013 for irregularities on her Athlete Biological Passport
Anastasiya Dotsenko	RUS	CCS	2014	Sochi 2014 – Sprint (21) Team Sprint (6) - Involved in scheme involving switched samples
Izabela Dragneva	BUL	WLT	2000—2004	2000 Sydney – 48 kg. Class (1). Furosemide (Lasix) (diuretic, masking agent).
Hamza Driouch	QAT	ATH	2010—2012	2012 London – 1500m (h1 10th r2/3) - Retroactively stripped of all his results from August 2 2012 to 2015 for irregularities on his Athlete Biological Passport
Oleksandr Dryhol	UKR	ATH	2012	2012 London – Hammer (34) - Turinabol (retest)
Alexandru Dudoglo	MDA	WLT	2008	2008 Beijing – 69kg (9) - Stanozolol (retest)
Johannes Dürr	AUT	CCS	2014	2014 Sochi – Skiathlon (8) - EPO
Maksim Dyldin	RUS	ATH	2008—2012	2012 London - 400m (5 h2 r2/3) 4 x 400m relay (5) - Turinabol (retest)
Inna Dyubanok	RUS	ICH	2010—2014	2014 Sochi - Women (6) - Involved in scheme involving switched samples
Johannes Eder	AUT	CCS	2006	2006 Torino – 4x10 km. relay / Team Sprint (DNF / 9 semi2). IOC Disciplinary investigation. Found to have been involved in an elaborate blood doping scheme.
Olga Fatkulina	RUS	SSK	2010—2014	2014 Sochi – 500m (2), 1000m (4), 1500 (9) - Involved in scheme involving switched samples
Róbert Fazekas	HUN	ATH	2000—2008	2004 Athínai – Discus Throw (1). Refusal to provide a urine sample.
Vasyl Fedoryshyn	UKR	WRE	2004—2012	2008 Beijing – 60kg Freestyle (2) - Turinabol (retest)
Tatyana Firova	RUS	ATH	2004—2012	2008 Beijing – 400m (6) / 4 x 400m (2) - Turinabol (retest)
Alina Fodorova	UKR	ATH	2016	2016 Rio de Janeiro - Heptathlon (28) Retroactively DQed in 2018 for period from 27 July 2016 t0 15 June 2020 for a positive ARDV
Mabel Fonseca	PUR	WRE	2004	2004 Athínai – Freestyle, 55 kg. class (5). Stanozolol (anabolic steroid).
Samuel Francis	QAT	ATH	2008	2008 Beijing – 100 metres (8 h1 r3/4) - Stanozolol (retest)
Ralfs Freibergs	LAT	ICH	2014	2014 Sochi – Men (8) - Turinabol
Olga Fyodorova-Stulneva	RUS	ATH/BOB	2004—2014	2014 Sochi – Women’s bobsleigh (18) - Involved in scheme involving switched samples
Jean-Marc Gaillard	FRA	CCS	2006—2018	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Luiza Galiulina	UZB	GYM	2008	2012 London – Out-of-competition positive. All-Around (DNS). Furosemide (Lasix) (diuretic, masking agent).
Anton Galkin	RUS	ATH	2004	2004 Athínai – 400 metres (4). Stanozolol (anabolic steroid).
Vera Ganeyeva	RUS	ATH	2012	2012 London – Discus (23) - Turinabol (retest)
Tyson Gay	USA	ATH	2008—2016	2012 London – 100m (4) / 4x100m (2) - Retroactively stripped of all his results from July 2012 to 2014 after admitting use of a banned substance – Oxilofrine
Angel Genchev	BUL	WLT	1988	1988 Seoul – 67½ kg. Class (1). Furosemide (Lasix) (diuretic, masking agent).
Theodora Giareni	GRE	SWI	2012—2016	2016 Rio - 50m freestyle (DNS) - SARMS in pre-Olympic testing
Yekaterina Glazyrina	RUS	BIA	2014	2014 Sochi - 15km (59) - Retroactively stripped of all her results from 19 December 2013 through 10 February 2017 after investigation by IBU
Yekaterina Gnidenko	RUS	CTR	2012	2012 London – Keirin (8) Sprint (18) - Turinabol (retest)
Mitko Grablev	BUL	WLT	1988	1988 Seoul – 56 kg. Class (1). Furosemide (Lasix) (diuretic, masking agent).
Mariya Grabovetskaya	KAZ	WLT	2008	2008 Beijing – +75kg (3) - Turinabol, Oxandrolone and Stanozolol (retest)
Serafim Grammatikopoulos	GRE	WLT	1984	1984 Los Angeles – Unlimited Class (DNF). Nandrolone (anabolic steroid).
Yelizaveta Grechishnikova	RUS	ATH	2012	London 2012 – 10000m (19) - Retroactively stripped of all her results from 2009 to 2013 for irregularities on her Athlete Biological Passport
Teja Gregorin	SLO	BIA/CCS	2002—2014	2010 Torino – 7.5km (36) 10km (9) 12.5km (9) 15km (5) 4 x 6 km relay (8). - GHRP-2 (retest)
Stian Grimseth	NOR	WLT	1996—2004	2000 Sydney – Out-of-competition positive. Non-competitor (DNS). Nandrolone (anabolic steroid). Admitted to taking supplement Ribose, which was later found to contain Nandroline. Grimseth sued the manufacturer and won and his doping sentence was reduced.
Phil Grippaldi	USA	WLT	1968—1976	1976 Montréal – 90 kg. Class (4). Anabolic steroid.
Zafar Guliyev	RUS	WRE	1996	1996 Atlanta – Greco-Roman, 48 kg. Class (3). Bromantan (Clenbuterol) (ß-agonist). A reprimand was given but the medal was allowed to stand.
Viktoriya Gurova-Valyukevich	RUS	ATH	2004—2012	2012 London – Triple jump (8) - Turinabol (retest)
Yuliya Gushchina	RUS	ATH	2008—2012	2012 London – 4 x 400m (2), 400m (4 h1 r2/3) - Stanozolol & Turinabol (retest)
Ferenc Gyurkovics	HUN	WLT	2004	2004 Athínai – 105 kg. Class (2). Oxandrolone (anabolic steroid).
Semoy Hackett	TTO	ATH	2008—2016	2012 London – 100m (5 h1 r2/3) 200m (8) 4x100 (DNF) - Retroactively stripped of all her results due to a Methylhexamine positive in June 2012
Vésteinn Hafsteinsson	ISL	ATH	1984—1996	1984 Los Angeles – Discus Throw (14QR / DNQ). Nandrolone (anabolic steroid).
Hussain Al-Hamdah	KSA	ATH	2012	2012 London – 5000m (h1 20th r1/2) - Retroactively stripped of all his results from 2009 to 2013 for irregularities on his Athlete Biological Passport
Tetiana Hamera-Shmyrko	UKR	ATH	2012	2012 London – Marathon (5) - Retroactively stripped of all her results from 2011 to 2015 for irregularities on her Athlete Biological Passport
Tyler Hamilton	USA	CYC	2000—2004	2004 Athínai – Individual Time Trial (1). Road race (18) Blood doping. His A-sample later suggested he may have blood doped. His B-sample was frozen and when it was attempted to be analyzed, it was not suitable for analysis. Thus this was not a doping positive. However, the Russian Olympic Committee protested, as their rider, Vyacheslav Yekimov, would have moved up to the gold medal position. This protest was eventually disallowed by the Court of Arbitration for Sport and Hamilton retained his gold medal. However in 2011 he confessed that he had used doping products for a large part of his career and voluntarily returned his Olympic gold medal to the IOC. He was formally stripped of the medal in 2012.
Tony André Hansen	NOR	EQU	2008	2008 Beijing – Jumping / Team Jumping (Ind (1 QR) / Team (3)). Capsaicin. Horse tested positive for substance.
Max Hauke	AUT	CCS	2014—2018	2018 Pyeonchang - 15 km (29) 30 km (27) 50 km (36) 4 x 10 km (13) - ost all results from December 2016 to March 5, 2019 after it was found he used a prohibited method (blood doping) between those dates
George Hincapie	USA	CYC	1992—2008	2004 Athens – RR (8th) Retroactively stripped of all his results from 2004 to 2006 for a multitude of violations
Hassan Hirt	FRA	ATH	2012	2012 London – 5,000 metres (11 h1 r1/2). Erythropoietin (EPO).
Abdelmajid El-Hissouf	MAR	ATH	2016	2016 Rio – Marathon (68) - Retroactively stripped of all her results from 2014 onwards for irregularities on his Athlete Biological Passport
Aad van den Hoek	NED	CYC	1972	1972 München – 100 km. Team Time Trial (3). Coramine (stimulant).
Jaime Huélamo	ESP	CYC	1972	1972 München – Individual Road Race (3). Coramine (stimulant).
Sərdar Həsənov	AZE	WLT	2008—2012	2008 Beijing – 62kg (AC) - Turinabol (retest)
Kirill Ikonnikov	RUS	ATH	2008—2012	2012 London – Hammer (6) - Turinabol (retest)
Ilya Ilyin	KAZ	WLT	2008—2012	2008 Beijing – 94kg (1) - Stanozolol (retest)
Ilya Ilyin	KAZ	WLT	2008—2012	2012 London – 94kg (1) - Stanozolol (retest)
Liudmyla Iosypenko	UKR	ATH	2012	2012 London – Heptathlon (4) - Retroactively stripped of all her results from 2011 to 2013 for irregularities on her Athlete Biological Passport
Cristina Iovu	MDA	WLT	2012	2012 London – 53kg (3) - Turinabol (retest)
Aleksandr Ivanov	RUS	WLT	2012	2012 London – 94kg (2) - Turinabol (retest)
Ivan Ivanov	BUL	WLT	1992—2000	2000 Sydney – 56 kg. Class (2). Furosemide (Lasix) (diuretic, masking agent).
Yuliya Ivanova	RUS	CCS	2014	2014 Sochi – 10km (17), 30km (30), 4x5k relay (6), team sprint (6) - Involved in scheme involving switched samples
Nataliya Ivoninskaya	KAZ	ATH	2008—2012	2012 London - 100m hurdles (7 h3 r1/3) - Turinabol and Stanozolol (retest)
Žiga Jeglič	SLO	ICH	2014—2018	PyeongChang 2018 - Ice Hockey (11) – Fentoterol
Tomas Johansson	SWE	WRE	1984—1996	1984 Los Angeles – Greco-Roman, Unlimited Class (2). Methenolone (anabolic steroid).
Ben Johnson	CAN	ATH	1984—1992	1988 Seoul – 100 metres (1). Stanozolol (anabolic steroid).
Marion Jones	USA	ATH	2000—2004	2000 Sydney – 100 / 200 / 4x1 / 4x4 / Long Jump (100 (1) / 200 (1) / 4x1 (3) / 4x4 (1) / LJ (3)). Tetrohydrogestinone (THG), aka "The Clear" (anabolic steroid). Confirmed October 2007, when Jones pleaded guilty in USA Federal Court to lying to federal agents about her steroid use prior to the 2000 Olympic Games. Disqualified by IOC in December 2007.
Marion Jones	USA	ATH	2000—2004	2004 Athínai – 4x1 / Long Jump (4x1 (DNF) / LJ (5)). Tetrohydrogestinone (THG), aka "The Clear" (anabolic steroid). Confirmed October 2007, when Jones pleaded guilty in USA Federal Court to lying to federal agents about her steroid use prior to the 2000 Olympic Games. Disqualified by IOC in December 2007.
Zbigniew Kaczmarek	POL	WLT	1972—1980	1976 Montréal – 67½ kg. Class (1). Anabolic steroid.
Yuliya Kalina	UKR	WLT	2012	2012 London – 58kg (3) - Turinabol (retest)
Alissa Kallinikou	CYP	ATH	2008	2008 Beijing – 400m (5 h7 r1/3) - Retroactively stripped of all her results since 1 July 2008 after testing positive for Testosterone
Vladimir Kanaykin	RUS	ATH	2012	London 2012 – 20km walk (DSQ (lifting) - Retroactively stripped of all his results from 2011 to 2012 for irregularities on his Athlete Biological Passport
Anwar Kandafil	MAR	WRE	1996	2000 Sydney – Out-of-competition positive. Non-competitor (DNS). Drug not announced.
Olga Kaniskina	RUS	ATH	2008—2012	London 2012 – 20km walk (2) - Retroactively stripped of all her results from 2009 to 2013 for irregularities on her Athlete Biological Passport
Anastasiya Kapachinskaya	RUS	ATH	2008—2012	2012 London – 4 x 400 (3) - Retroactively stripped of all her results from 2008 to 2017 due to ban imposed after testing positive at the Beijing Olympixs.
Anastasiya Kapachinskaya	RUS	ATH	2008—2012	2008 London – 4 x 400 (3) - Turinabol and stanozolol.(retest)
Algo Kärp	EST	CCS	2010—2018	2018 Pyeonchang - 50km (17) 4 x 10 km (12) Involved in a scheme using a prohibited method (blood doping) prior to the Games
Aleksandr Kasyanov	RUS	BOB	2014	2014 Sochi – Two-man (4), Four-man (4) - Involved in scheme involving switched samples
Zoltán Kecskés	HUN	WLT	1996	2004 Athínai – Out-of-competition positive. Non-competitor (DNS). Substance not released. Did not compete.
Simon Kemboi	KEN	ATH	1992—1996	2000 Sydney – Out-of-competition positive. 4x400 metre relay (DNS). Nandrolone (anabolic steroid).
Fani Khalkia	GRE	ATH	2004	2008 Beijing – Out-of-competition positive. Non-competitor (DNS). Methyltrienolone (anabolic steroid). Tested positive in pre-competition test and not allowed to compete.
Gulfiya Khanafeyeva	RUS	ATH	2012	2012 London – Hammer (15) - Turinabol (retest)
Nataliya Khoronenko-Mikhnevich	BLR	ATH	2004—2012	2008 Beijing – Shot put (2) - Methandienone and Stanozolol (retest)
Valentin Khristov	BUL	WLT	1976—1980	1976 Montréal – 110 kg. Class (1). Anabolic steroid.
Hripsime Khurshudyan	ARM	WLT	2008—2012	2008 Beijing – 75kg (11) - Dehydrochlormethyltestosterone and Stanozolol (retest)
Hripsime Khurshudyan	ARM	WLT	2008—2012	2012 London – +75kg (1) - Turinabol and Stanozolol (retest)
Ilvir Khuzin	RUS	BOB	2014	2014 Sochi – Four-man (4) - Involved in scheme involving switched samples
Adem Kılıççı	TUR	BOX	2008—2012	2012 London – 75kg (5) - Turinabol (retest)
Kim Jong-Su	PRK	SHO	2004—2016	2008 Beijing – Air Pistol / Free Pistol (AirPistol (3) / FreePistol (2)). Propranolol (ß-antagonist/blocker).
Kim Un-Hyang	COR	ICH	2018	PyeongChang 2018 – Ice Hockey (8) – Hydrochlorothiazide – No fault violation so not disqualified.
Courtney King-Dye	USA	EDR	2008	2008 Beijing – Dressage / Team Dressage (Ind (13) / Team (4)). Felbinac. Horse tested positive for substance.
Ümmü Kiraz	TUR	ATH	2012	2012 London – Marathon (88) - Retroactively stripped of all her results from 2011 to 2013 for irregularities on her Athlete Biological Passport
Sergey Kirdyapkin	RUS	ATH	2008—2012	London 2012 – 50km walk (1) - Retroactively stripped of all his results from 2009 to 2013 for irregularities on his Athlete Biological Passport
Anisya Kirdyapkina	RUS	ATH	2012	2012 London - 20km walk (4) - Retroactively stripped of all her results from 2011 to 2013 for irregularities on her Athlete Biological Passport
Blaža Klemenčič	SLO	MTB	2008—2012	2012 London –Mountain biking (23) – Tested positive for EPO in retest of sample from March 2012. Retroactively stripped of all her results from March to December 2012 for irregularities on her Athlete Biological Passport
Yevgeniya Kolodko	RUS	ATH	2012	2012 London – Shot (2) - Turinabol and Ipamorelin (retest).
Yuliya Kondakova	RUS	ATH	2008—2012	2012 London - 100m hurdles (5 h1 r2/3) - Retroactively stripped of all her results from 2012 to 2016 after being found guilty of participating in doping programmes in 2012 and 2013
Nataliya Koreyvo	BLR	ATH	2012	2012 London – 1500m (7) - Retroactively stripped of all her results from 2010 to 2014 for irregularities on her Athlete Biological Passport
Andrey Korneyev	RUS	SWI	1996	1996 Atlanta – 200 metre Breaststroke (3). Bromantan (Clenbuterol) (ß-agonist). A reprimand was given but the medal was allowed to stand.
Olha Korobka	UKR	WLT	2004—2008	2008 Beijing – 75kg (3) - Turinabol (retest)
Pavel Korostelyov	RUS	CCS	2006	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Irina Korzhanenko	RUS	ATH	1996—2004	2004 Athínai – Shot Put (1). Stanozolol (anabolic steroid).
Yekaterina Kostetskaya	RUS	ATH	2008—2012	2012 London – 1500m (9) - Retroactively stripped of all her results from 2011 to 2015 for irregularities on her Athlete Biological Passport
Boyanka Kostova	AZE BUL	WLT	2010—2012	2012 London – 58kg (5) - Turinabol and Stanozolol (retest)
Zoltán Kovács	HUN	WLT	2000—2004	2004 Athínai – 105 kg. Class (DNF). Refusal to provide a urine sample.
Liudmyla Kovalenko	UKR	ATH	2012	2012 London - 5000 m (11 h1 r1/2) - Results voided for biological passport violation June 2012 to April 2016
Svetlana Krivelyova	RUS EUN	ATH	1992—2004	2004 Athínai – Shot Put (3). Oxandrolone metabolite (anabolic steroid). Disqualified in December 2012 after re-testing of samples from the 2004 Olympics.
Antonina Krivoshapka	RUS	ATH	2012	2012 London – 400m (6), 4x400 (2) - Turinabol (retest)
Andrey Krivov	RUS	ATH	2012	2012 London – 20k walk (37) Retroactively stripped of all his results from 2011 to 2017 for irregularities on her Athlete Biological Passport
Aleksandr Krushelnitsky	OAR	CUR	2018	PyeongChang 2018 – Mixed doubles (3) – Meldonium
Pavel Krivitsky	BLR	ATH	2012	2012 London – Hammer (28) - Turinabol and Stanozolol (retest)
Anastasiya Kudinova	KAZ	ATH	2016	2016 Rio – 400m (h8-7th r1/3) – Drostanolone prior to Games
Besik Kudukhov	RUS	WRE	2008—2012	2012 London – 65kg - Turinabol (retest). IOC Issued a statement "Disciplinary proceedings, which could have resulted in the establishment of the anti-doping rule violation and the consequences resulting therefrom cannot be conducted against a deceased person. Consequently, these proceedings must be filed."
Galina Kulakova	URS	CCS	1968—1983	1976 Innsbruck – 5 km. (3). Ephedrine (stimulant). Kulakova also finished 3rd in the 10 km. and 1st in the relay, but was allowed to keep those medals.
Irina Kulesha	BLR	WLT	2008—2012	2012 London – 75kg (3) - Turinabol and stanozolol.(retest)
Irina Kulesha	BLR	WLT	2008—2012	2008 Beijing – 75kg (4) - Turinabol (retest)
Marco Kutscher	GER	EQU	2004—2008	2008 Beijing – Jumping / Team Jumping (Ind (38) / Team (8)). Capsaicin. Horse tested positive for substance.
Stefan Laggner	AUT	WLT	1984	1984 Los Angeles – Unlimited Class (4). Nandrolone (anabolic steroid).
Eric Lamaze	CAN	EQU	2008—2016	2000 Sydney – Out-of-competition positive. Non-competitor (DNS). Cocaine. Also disqualified from Canadian team in 1996 for a positive cocaine test.
Dmitry Lapikov	RUS	WLT	2008	2008 Beijing – 105kg (3) - Turinabol (retest)
Larisa Lazutina	RUS EUN	CCS	1992—2002	2002 Salt Lake City – 10 km (4) / 15 km (2) / 30 km. (1) / Pursuit (2). Darbopoietin (EPO analog).
Aleksandr Lazutkin	BLR	CCS	2006—2014	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Tatyana Lebedeva	RUS	ATH	2000—2012	2008 Beijing – Long jump (2), Triple jump (2) - Turinabol (retest)
Yekaterina Lebedeva	RUS	ICH	2010—2014	2014 Sochi - Women (6) - Involved in scheme involving switched samples
Walter Legel	AUT	WLT	1960—1980	1972 München – 67½ kg. Class (15). Amphetamines (stimulant).
Aleksandr Legkov	RUS	CCS	2006—2014	2014 Sochi – 30km skiathlon (11), 50km (1), 4x10 relay (2) - Involved in scheme involving switched samples
Lorne Leibel	CAN	SAI	1976	1976 Montréal – Tempest Class (7). Phenylpropanolamine (stimulant) (he had taken Dristan). DQed for the affected race only, not for the entire event.
Levi Leipheimer	USA	CYC	2004—2008	2004 Athens – RR (DNF) Retroactively stripped of all his results from 1999 to 2006 for a multitude of violations
Alexander Leipold	GER FRG	WRE	1988—2000	2000 Sydney – Freestyle, 76 kg. Class (1). Nandrolone (anabolic steroid).
Aleksey Lesnichy	BLR	ATH	2004	2004 Athínai – High Jump (DNQ Group B). Clenbuterol (ß-agonist).
Hans-Gunnar Liljenwall	SWE	MOP	1964—1972	1968 Ciudad de México – Individual / Team (3). Alcohol (depressant).
Liu Chunhong	CHN	WLT	2004—2008	2008 Beijing – 69kg (1) - GHRP-2 and sibutramine (retest)
Liu Yunfeng	CHN	ATH	2004	2000 Sydney – Out-of-competition positive. Racewalking (DNS). Drug not announced.
Jud Logan	USA	ATH	1984—2000	1992 Barcelona – Hammer Throw (4). Clenbuterol (ß-agonist).
Aleksandr Loginov	RUS	BIA	2014	2014 Sochi – 20km (30) - EPO (retest of sample from 2013)
Nataliya Lupu	UKR	ATH	2012—2016	2016 Rio – 800m (8 h2 r2/3) Tested positive for Exogenous Steroids in July.2016, IAAF have voided all her results since then
Denis Lynch	IRL	EQU	2008	2008 Beijing – Jumping (=8). Capsaicin. Horse tested positive for substance.
Tatyana Lysenko	RUS	ATH	2004—2012	2012 London – Hammer (1) – Turinabol (retest)
Pavel Lyzhin	BLR	ATH	2004—2012	2008 Beijing – Shot put (4) - Turinabol (retest)
Emmanuel Magnien	FRA	CYC	1992	2000 Sydney – Out-of-competition positive. Non-competitor (DNS). Corticosteroid cream. 3-months suspension but missed the Olympics.
Maryna Malets-Lisohor	UKR	CCS	2006—2014	2014 Sochi – Team sprint (DNS) - Trimetazidine
Aset Mambetov	KAZ	WRE	2004—2008	2008 Beijing – 96kg GR (3) - Stanozolol (retest)
Maiya Maneza	KAZ	WLT	2012	2008 Beijing – 63kg (DNS) - Stanozolol (retest)
Maiya Maneza	KAZ	WLT	2012	2012 London – 63kg (1) - Stanozolol (retest)
Kornelia Marek-Kubińska	POL	CCS	2010—2014	2010 Vancouver – 10K / 30K / Skiathlon / Relay / Team Sprint (10K (39) / 30K (11) / Skiathlon (35) / Relay (6) / Team Sprint (9)). Erythropoietin (EPO).
Zalina Marghiev	MDA	ATH	2008—2016	London 2012 – Hammer (8) - Results voided from 2009 to 2013 as a result of a doping violation at the 2009 World Championships - Stanozolol and Dehydrochloromethyltestosterone
Fernando Mariaca	ESP	WLT	1984—1992	1988 Seoul – 67½ kg. Class (13). Pemoline (stimulant).
Wilfredo Martínez	CUB	ATH	2008	2008 Beijing – Long jump (5) - Acetazolamide (retest)
Tigran G. Martirosyan	ARM	WLT	2008	2008 Beijing – 69kg (3) – Stanozolol and Turinabol (retest)
Yekaterina Martynova	RUS	ATH	2012	2012 London – 1500m (h2 7th r1/3) - Retroactively stripped of all her results from 2011 to 2015 for irregularities on her Athlete Biological Passport
Yelena Matoshko	BLR	ATH	2012	2012 London - Hammer (25) - Oxandrolone (retest)
Nataliya Matveyeva	RUS	CCS	2006—2014	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Nataliya Matveyeva	RUS	CCS	2006—2014	2014 Sochi – Sprint (4 h4 r2/4) - Involved in scheme involving switched samples
Marc Mayer	AUT	CCS	2002	2002 Salt Lake City – 50 km. / Pursuit / Sprint (50K (24) / Pursuit (50) / Sprint (21)). Blood doping.
Maksym Mazuryk	UKR	ATH	2008—2012	2012 London – Pole vault (18) - Turinabol (retest)
Marie McMahon-Davenport	IRL	ATH	1996—2004	1996 Atlanta – 5,000 metres (14 h2 r1/2). Phenylpropanolamine (stimulant). A warning was given because of extenuating circumstances.
Nijolė Medvedeva	LTU	ATH	1992	1992 Barcelona – Long Jump (4). Meziocarde (a stimulant).
Karin Melis	TUR	ATH	2008—2016	London 2012 – Long Jump (DNS r2/2) - Results voided from June 2012 as a result of a doping violation prior to the Games – Testosterone
Oksana Menkova	BLR	ATH	2008—2012	2008 Beijing – Hammer (1) - Stanozolol and Turinabol (retest)
Oksana Menkova	BLR	ATH	2008—2012	2012 London – Hammer (7) - Turinabol and Stanozolol (retest)
Andrey Mikhnevich	BLR	ATH	2000—2012	2008 Beijing – Shot put (3) - Retroactively stripped of all his results from 2005 onwards after retests of the 2005 world Championships triggered a retrospective life ban,
Andrey Mikhnevich	BLR	ATH	2000—2012	2012 London – Shot put (17q) - Retroactively stripped of all his results from 2005 onwards after retests of the 2005 world Championships triggered a retrospective life ban,
Sevdalin Minchev	BUL	WLT	1992—2004	2000 Sydney – 62 kg. Class (3). Furosemide (Lasix) (diuretic, masking agent).
Gülcan Mıngır	TUR	ATH	2012	2012 London - 3000m SC (h2-10th r1/2) Turinabol (retest)
Anastasiya Mironchik-Ivanova	BLR	ATH	2012	2012 London – Long jump (7) - Turinabol (retest)
Hanna Mishchenko	UKR	ATH	2008—2012	2012 London – 1500m (h3-11th r1/3) - Retroactively stripped of all her results from June 2012 to 2016 for irregularities on her Athlete Biological Passport
Davit Modzmanashvili	GEO	WRE	2012	2012 London - Freestyle - over 120 kgs (2) - Stanozolol and Turinabol (retest)
Jarosław Morawiecki	POL	ICH	1988	1988 Calgary – Ice Hockey (10). Testosterone (anabolic steroid).
Ghfran Mouhamad	SYR	ATH	2012—2016	2012 London – 400 m hurdles (8 h2 r1/3). Methylhexanamine.
Johann Mühlegg	GER ESP	CCS	1992—2002	2002 Salt Lake City – 10/10 km pursuit (1), 30 km (1), and 50 km. (1). Darbopoietin (EPO analog).
Semiha Mutlu	TUR	ATH	2012	2012 London – 20km walk (47) - Retroactively stripped of all her results from 2011 to 2013 for irregularities on her Athlete Biological Passport
Tezdzhan Naimova	BUL	ATH	2008	2008 Beijing – 100m (5 h9 r1/4) - Retroactively stripped of all her results since 28 June 2008 after being found guilty of tampering with the sample.
Nan Aye Khine	MYA	WLT	2004	2004 Athínai – 56 kg. Class (4). Anabolic steroid (not released).
Arjomand Mohamed Nasehi	IRI	WLT	1972	1972 München – 52 kg. Class (10). Ephedrine (stimulant).
Anna Nazarova	RUS	ATH	2012	2012 London – Long Jump (6) - Turinabol (retest)
Aleksey Negodaylo	RUS	BOB	2014	2014 Sochi - Four-man (1) - Involved in scheme involving switched samples
Irina Nekrasova	KAZ	WLT	2008	2008 Beijing – 63kg (2) – Stanozolol (retest)
Yelena Nikitina	RUS	SKE	2014	2014 Sochi – Women (3) - Involved in scheme involving switched samples
Arne Norrback	SWE	WLT	1976	1976 Montréal – 60 kg. Class (eliminated). Anabolic steroid.
Anastasiya Novikova	BLR	WLT	2004—2012	2008 Beijing – 53kg (3) - Stanozolol and Turinabol (retest)
Ruslan Nurudinov	UZB	WLT	2012—2016	2012 London - 105kg (4) - Turinabol (retest)
Cian O'Connor	IRL	EQU	2004—2012	2004 Athínai – Jumping / Team Jumping (Individual (1)). Zuclopenthixol and fluphenazine. Disqualified because his horse, Waterford Crystal, was found to have a doping positive.
Michael O'Reilly (DNS)	IRL	BOX	2016	Rio 2016 – Middleweight (DNS) - Diuretic - Withdrawn from competition shortly before the event.
Olena Olefirenko	UKR	ROW	2004—2008	2004 Athínai – Quadruple Sculls (3). Etamivan (stimulant).
Josephine Onyia	ESP	ATH	2008	2008 Beijing – 100m Hurdles (5 h1 r2/3) - Methylhexanamine (retest)
Mariya Orlova	RUS	SKE	2014	2014 Sochi – Women (6) - Involved in scheme involving switched samples
Ösökhbayaryn Chagnaadorj	MGL	WLT	2016	2016 Rio – 56kg (DNF) - Testosterone.
Nadezhda Ostapchuk	BLR	ATH	2004—2012	2008 Beijing – Shot put (3) - Turinabol and tamoxifen (retest)
Nadezhda Ostapchuk	BLR	ATH	2004—2012	2012 London – Shot Put (1) – Metenolone
Moukheld Al-Outaibi	KSA	ATH	2008—2016	2016 Rio – 5000m ( 21 h1 r1/2) - Results voided from May 2016 as a result of a doping violation prior to the Games - (CERA and Evasion of testing)
Bettina Overesch-Böker-Hoy	GER FRG	EVE	1984—2004	2004 Athínai – Jumping / Team Jumping (3). Dihydroxyphenhydramine. Overturned on appeal.
Oyuunbilegiin Pürevbaatar	MGL	WRE	2000—2004	2000 Sydney – Freestyle, 58 kg. Class (5). Furosemide (Lasix) (diuretic, masking agent).
Sibel Özkan	TUR	WLT	2008	2008 Beijing – 48kg (2) - Stanozolol (retest)
Oleksandr P'iatnytsia	UKR	ATH	2012	2012 London – Javelin (2) - Turinabol (retest)
Vita Palamar	UKR	ATH	2000—2008	2008 Beijing – High jump (5) - Turinabol (retest)
Vasily Pankov	BLR	ICH	1998—2002	2002 Salt Lake City – Ice Hockey (4). Nandrolone (anabolic steroid).
Nikolay Pankratov	RUS	CCS	2006—2010	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete..
Nizami Paşayev	AZE	WLT	2000—2008	2008 Beijing – 94kg (5)- Turinabol, Oxandrolone and Stanozolol (retest)
Yekaterina Pashkevich	RUS	ICH	2002—2014	2014 Sochi - Women (6) - Involved in scheme involving switched samples
Petr Pavlásek	TCH	WLT	1972—1976	1976 Montréal – 110 kg. Class (6). Anabolic steroid.
Vitālijs Pavlovs	LAT	ICH	2014	2014 Sochi – Men (8) - Methalhexamine – Disqualified for one game only
Darya Pchelnik	BLR	ATH	2008	2008 Beijing – Hammer (4) - Turinabol (retest)
Oleg Perepechonov	RUS	WLT	2004—2008	2004 Athens – Middleweight (3) - Clenbuterol
Vanja Perišić	CRO	ATH	2008	2008 Beijing – 800 m (2nd in heat). CERA re-test +.
Wolfgang Perner	AUT	BIA	1994—2006	2006 Torino – 20 km. / Sprint / Pursuit (20K (60) / Sprint (4) / Pursuit (25)). IOC Disciplinary investigation. Found to have been involved in an elaborate blood doping scheme.
Rodrigo Pessoa	BRA	EQU	1992—2012	2008 Beijing – Jumping / Team Jumping (Ind (=27) / Team (10)). Capsaicin. Horse tested positive for substance.
Göran Pettersson	SWE	WLT	1984	1984 Los Angeles – 110 kg. Class (6). Nandrolone (anabolic steroid).
Antonio Pettigrew	USA	ATH	2000	2000 Sydney – 400 / 4x400 (400 (7) / 4x400 (1)). Erythopoietin / HGH. Exposed and disqualified in 2008 when documents were revealed at trial of Trevor Graham, his former coach.
Aleksey Petukhov	RUS	CCS	2010—2014	2014 Sochi – Sprint (8) - Involved in scheme involving switched samples
Marina Piller	ITA	CCS	2014	2014 Sochi – 10km (31) Skiathlon (16) 30km (25) 4 x 5km relay (8) Retroactively stripped of all her results from 2013 to 2015 for irregularities on her Athlete Biological Passport
Jürgen Pinter	AUT	CCS	2006	2006 Torino – 4x10 km. relay / Team Sprint (DNF / 9 semi2). IOC Disciplinary investigation. Found to have been involved in an elaborate blood doping scheme.
Zhanna Pintusevych-Blok	UKR	ATH	1996—2004	2004 Athens – 100m (6 h2 r3/4) - Retroactively stripped of all her results from 2002 to 2013 for a multitude of violations
Darya Pishchalnikova	RUS	ATH	2012	London 2012 – Discus (2) - Results voided from May 2012 as a result of a doping violation prior to the Games – Oxandrolone
Svetlana Podobedova	KAZ	WLT	2012	2012 London – 75kg (1) - Stanozolol (retest)
Aleksandr Pogorelov	RUS	ATH	2004—2008	2008 Beijing – Decathlon (4) - Turinabol (retest)
Aleksey Poltoranin	KAZ	CCS	2006—2018	2018 Pyeonchang - Sprint (17) 50 km (15) 4 x 10 km (8) Team Sprint (15) - - Involved in a scheme using a prohibited method (blood doping) prior to the Games
Svetlana Pospelova	RUS	ATH	2000	2000 Sydney – 400 metres (4 h8 r1 / 4). Stanozolol (anabolic steroid). Tested positive in out-of-competition test but after the Games and her results stood.
František Pospíšil	TCH	ICH	1968—1976	1976 Innsbruck – Ice Hockey (2). Codeine (narcotic pain medication). The team doctor, Treffny, was disqualified from serving in that capacity for life.
Olga Potylitsyna	RUS	SKE	2014	2014 Sochi – Women (5) - Involved in scheme involving switched samples
Olesia Povkh	UKR	ATH	2012—2016	2016 Rio – 100m (8 h1 r3/4) 4 x 100m relay (6) Retroactively stripped of all her results since June 15 2016 due to a positive test for excessive testosterone
Iva Prandzheva	BUL	ATH	1996	1996 Atlanta – Long Jump / Triple Jump (LJ (4) / TJ (7)). Methadienone (anabolic steroid).
Iva Prandzheva	BUL	ATH	1996	2000 Sydney – Out-of-competition positive. Long Jump / Triple Jump (DNS). Nandrolone (anabolic steroid).
Pürevjavyn Batsükh	MGL	CCS	1984	1984 Sarajevo – 15 km. / 30 km. / 4x10 relay (15K (69) / 30K (65) / Relay (15)). Methandienone (anabolic steroid).
Aleksey Pushkaryov	RUS	BOB	2014	2014 Sochi – Four-man (4) - Involved in scheme involving switched samples
Olga Pylyova-Medvedtseva	RUS	BIA	2002—2010	2006 Torino – 15 km. (2). Carphedon (stimulant).
Jorge Quesada	ESP	MOP	1984—1988	1988 Seoul – Individual / Team (Ind (24) / Team (9)). Propranolol (ß-antagonist/blocker).
Ineta Radēviča	LAT	ATH	2004—2012	2012 London – LJ (4) Oxandrolone (retest)
Andreea Răducan	ROU	GYM	2000	2000 Sydney – Individual All-Around (1). Pseudoephedrine (stimulant).
Kléber Ramos	BRA	CYC	2016	2016 Rio – Road race (DNF) – CERA
Rashid Ramzi	BRN	ATH	2004—2008	2008 Beijing – 1500 m (1). CERA re-test + on A/B samples.
Kikkan Randall	USA	CCS/IOC	2002—2018	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Rita Razmaitė	LTU	CTR	1992—1996	1996 Atlanta – Match Sprint (13). Bromantan (Clenbuterol) (ß-agonist). A reprimand was given but the placement was allowed to stand
Ihor Razoronov	UKR	WLT	1996—2008	2008 Beijing – Heavyweight (105 kg) (6). Nandrolone (anabolic steroid).
Ross Rebagliati	CAN	SNB	1998	1998 Nagano – Giant Slalom (1). Marijuana. Rebagliati was disqualified two days after winning this event, when his drug test turned up positive for marijuana use. He was reinstated as the gold medalist on 12 February after a ruling by the Court of Arbitration for Sport.
Davide Rebellin	ITA	CYC	1992—2008	2008 Beijing – Road race (2). CERA.
Meliz Redif	TUR	ATH	2012	2012 London – 4x400 (h2-8th r1/2) - Retroactively stripped of all her results from 2009 to 2013 for irregularities on her Athlete Biological Passport
Andris Reinholds	LAT	ROW	1996—2000	2000 Sydney – Single Sculls (8). Norandrosterone (anabolic steroid).
Bernardo Resende	BRA	EQU	2004—2008	2008 Beijing – Jumping / Team Jumping (Ind (=3) / Team (10)). Capsaicin. Horse tested positive for substance.
Harald Riedl	AUT	EVE	2004	2004 Athínai – 3-day event (Ind (73) / Team (13)). Substance not released. Disqualified because his horse, Foxy XX, was found to have a doping positive.
Estela Rodríguez	CUB	JUD	1992—1996	1996 Atlanta – Unlimited Class (1). Furosemide (Lasix) (diuretic, masking agent). A reprimand was given but the medal was allowed to stand.
Yana Romanova	RUS	BIA	2010—2014	2014 Sochi –7.5 km (19), 10km (23), 15km (55), women’s relay (2) - Involved in scheme involving switched samples
Danuta Rosani	POL	ATH	1976	1976 Montréal – Discus Throw (14QR / DNQ). Anabolic steroid.
Duane Ross	USA	ATH	2004	2004 Athínai – 110 m hurdles (semis). Disqualified because of systematic doping abuse and PED trafficking revealed for years 2001-03. Official DQ occurred in 2011.
Wolfgang Rottmann	AUT	BIA	1998—2006	2006 Torino – Sprint / Pursuit (Sprint (27) / Pursuit (21)). IOC Disciplinary investigation. Found to have been involved in an elaborate blood doping scheme.
Aleksandr Rumyantsev	RUS	SSK	2010—2014	2014 Sochi –5000m (11), Team pursuit (6) - Involved in scheme involving switched samples
Andrey Rybakov	BLR	WLT	2004—2012	2008 Beijing – 85kg (2) - Stanozolol and Turinabol (retest)
Vitaliy Rəhimov	AZE	WRE	2004—2008	2008 Beijing – 60kg GR (2) - Turinabol (retest)
Leonidas Sabanis	GRE	WLT	1996—2004	2004 Athínai – 62 kg. Class (3). Testosterone (anabolic steroid).
Evi Sachenbacher-Stehle	GER	BIA/CCS	2002—2014	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Evi Sachenbacher-Stehle	GER	BIA/CCS	2002—2014	2014 Sochi – 12.5km (4), mixed relay (4) - Methalhexamine
Kei Saito (DNS)	JPN	STK	2012—2018	PyeongChang 2018 – 5000 m relay (DNS) – Acetazolamide
Pınar Saka	TUR	ATH	2012	2012 London – 400 (h4-4th r1/3) 4x400 (h2-8th r1/2) - Retroactively stripped of all her results from 2010 to 2013 for irregularities on her Athlete Biological Passport
Thing Baijan Sanamacha Chanu	IND	WLT	2000—2004	2004 Athínai – 53 kg. Class (4). Furosemide (Lasix) (diuretic, masking agent).
Mariya Savinova	RUS	ATH	2012	2012 London - 800m (1) - Retroactively stripped of all her results from 2010 to 2013 for irregularities on her Athlete Biological Passport
Dina Sazanovets	BLR	WLT	2012	2012 London – 69kg (4) - Drostanolone and Stanozolol (retest)
Alois Schloder	FRG	ICH	1968—1976	1972 Sapporo – Ice Hockey (7). Ephedrine (stimulant). The team doctor, Franz Schlickenrieder, was disqualified from serving in that capacity for life.
Stefan Schumacher	GER	CYC	2008	2008 Beijing – Ind TT / Road race (ITT (13) / RR (---)). CERA.
Alex Schwazer	ITA	ATH	2008	2012 London – Out-of-competition positive. Pre-games testing (DNS). Erythropoietin (EPO).
Serhiy Sednev	UKR	BIA	2010—2014	2014 Sochi – 10km (44), 12.5km (54) - EPO
Vladimir Sedov	KAZ	WLT	2008	2008 Beijing – 85kg (4) - Stanozolol (retest)
Andriy Semenov	UKR	ATH	2008—2012	2012 London - shot put (AC) - lost all results from 22 August 2011 to 21 August 2013 after testing positive for turinabol in retest of sample from 2011 World Championships.
Nadezhda Sergeyeva	OAR RUS	BOB	2014—2018	PyeongChang 2018 – Two-woman (12) - Trimetazidine
Adam Seroczyński	POL	CAN	2000—2008	2008 Beijing – K2-1000 (4). Clenbuterol (ß-agonist).
Marina Shainova	RUS	WLT	2008	2008 Beijing – 58kg (2) - Stanozolol (retest)
Yevgeniya Shapovalova	RUS	CCS	2010—2014	2014 Sochi – Sprint (28) - Involved in scheme involving switched samples
Mohammed Shaween	KSA	ATH	2008—2012	2012 London – 1500m (r1-7th) - Retroactively stripped of all his results from 2011 to 2013 for irregularities on his Athlete Biological Passport
Olga Shchukina	UZB	ATH	2004	2004 Athínai – Shot Put (18 QR Group A / DNQ). Clenbuterol (ß-agonist). Did not compete.
Nataliya Shekhodanova	RUS	ATH	1996—2000	1996 Atlanta – 100 metre Hurdles (7). Stanozolol (anabolic steroid).
Anzhelika Shevchenko	UKR	ATH	2012	2012 London – 1500m (h1 13th r1/3) - Retroactively stripped of all her results from 2011 to 2013 for irregularities on her Athlete Biological Passport
Anna Shibanova	RUS	ICH	2014	2014 Sochi - Women (6) - Involved in scheme involving switched samples
Eiji Shimomura	JPN	VOL	1984	1984 Los Angeles – Volleyball (7). Testosterone (anabolic steroid).
Marina Shkermankova	BLR	WLT	2012	2012 London – 69kg (3) - Turinabol and Stanozolol (retest)
Svetlana Shkolina	RUS	ATH	2008—2012	2012 London - HJ (3) - Retroactively stripped of all her results from 2012 to 2015 after being found guilty of participating in doping programmes in 2012 and 2013
Svitlana Shmidt	UKR	ATH	2012	2012 London – 3000m SC (h3-12th r1/2) - Retroactively stripped of all her results from March 2012 to 2015 for irregularities on her Athlete Biological Passport
Liliya Shobukhova	RUS	ATH	2004—2012	2012 London – Marathon (DNF) - Retroactively stripped of all her results from 2009 to 2015 for irregularities on her Athlete Biological Passport
Olena Shumkina	UKR	ATH	2012	2012 London – 20k walk (50) Retroactively stripped of all her results from 2011 to 2017 for irregularities on her Athlete Biological Passport
Arman-Marshall Silla (DNS)	BLR	TKW	2016	2016 Rio – 80kg (DNS) - Results voided from June 2016 as a result of a doping violation prior to the Games - (Meldonium)
Sibel Şimşek	TUR	WLT	2004—2012	2012 London – 63kg (4) - Turinabol and Stanozolol (retest)
Gabriel Sîncrăian	ROU	WLT	2012—2016	2016 Rio – 85kg (3) - Testosterone.
Galina Skiba	RUS	ICH	2006—2014	2014 Sochi - Women (6) - Involved in scheme involving switched samples
Yelena Slesarenko	RUS	ATH	2004—2008	2008 Beijing – High jump (4) - Turinabol (retest)
Yekaterina Smolentseva	RUS	ICH	2002—2014	2014 Sochi - Women (6) - Involved in scheme involving switched samples
Dmitry Starodubtsev	RUS	ATH	2008—2012	2012 London – Pole Vault (4) - Turinabol (retest)
Jevgenijus Šuklinas	LTU	CAN	2012	2012 London - C1 200m (2) - Turinabol (retest)
Andor Szanyi	HUN	WLT	1988—1992	1988 Seoul – 100 kg. Class (2). Stanozolol (anabolic steroid).
Karel Tammjärv	EST	CCS	2010—2018	2018 Pyeonchang - Sprint (52) 15km (22) 30 km (27) 4 x 10 km (12) Team Sprint (17) – Involved in a scheme using a prohibited method (blood doping) prior to the Games
Mikiyasu Tanaka	JPN	VOL	1976—1984	1984 Los Angeles – Volleyball (7). Ephedrine (stimulant). The trainer of the Japanese volleyball team was banned from the Olympics for life.
Ahmed Tarbi	ALG	WLT	1980—1984	1984 Los Angeles – 56 kg. Class (9). Nandrolone (anabolic steroid).
Mahmoud Tarha	LBN	WLT	1984	1984 Los Angeles – 52 kg. Class (4). Nandrolone (anabolic steroid).
Serghei Tarnovschi	MDA	CAN	2014—2016	2016 Rio – C1 100m (3) C2 100m (DNS) - GHRP-2
Martin Tauber	AUT	CCS	2006	2006 Torino – 15 km. / Pursuit / 4x10 km. relay (15K (17) / Pursuit (8) / Relay (DNF)). IOC Disciplinary investigation. Found to have been involved in an elaborate blood doping scheme.
Nurcan Taylan	TUR	WLT	2004—2008	2008 Beijing – 48kg (AC) - Methandienone (retest)
Artur Taymazov	UZB	WRE	2000—2012	2008 Beijing – 120kg Freestyle (1) - Turinabol and stanozolol.(retest)
Artur Taymazov	UZB	WRE	2000—2012	2012 London - freestyle 120kg (1) - Turinabol (retest)
Robel Teklemariam	ETH	CCS	2006—2010	2006 Torino – Out-of-competition positive. Non-competitor (DNS). Excessive hematocrit level. Suspended for five days - did not compete.
Svetlana Terentyeva	RUS	ICH	2002—2010	2010 Vancouver – Out-of-competition positive. Non-competitor (DNS). Tuaminoheptane. Reprimanded, not DQ - drug only illegal in competition, not out of competition.
Viktoriya Tereshchuk	UKR	MOP	2004—2012	2008 Beijing - Individual (3) - Turinabol (retest)
Soslan Tigiyev	UZB	WRE	2008—2012	2012 London – 74 kg. freestyle (3). Methylhexanamine
Soslan Tigiyev	UZB	WRE	2008—2012	2008 Beijing – 74 kg. freestyle (2). Turinabol
Taymuraz Tigiyev	KAZ	WRE	2008—2012	2008 Beijing – 94kg freestyle (3) - Turinabol (retest)
Ivan Tikhon	BLR	ATH	2000—2016	2004 Athínai – Hammer Throw (2). Methandienone metabolite (anabolic steroid). Disqualified in December 2012 after re-testing of samples from the 2004 Olympics.
Ivan Tikhon	BLR	ATH	2000—2016	2008 Beijing – Hammer Throw (2). Testosterone (anabolic steroid). Overturned on appeal to the Court of Arbitration for Sport.
Ivan Tikhon	BLR	ATH	2000—2016	2012 London – Out-of-competition positive. Pre-games testing (DNS). Methandienone metabolite (anabolic steroid). Re-test of Athens samples DQed him from London.
Hanna Titimets	UKR	ATH	2012—2016	2012 London - 400m hurdles (4h2r2/3) - Retroactively stripped of all her results from 26 June 2012 to 26 June 2014. for irregularities on her Athlete Biological Passport
Stanislav Tivonchik	BLR	ATH	2012	2012 London - PV (21 r1/2) - - Turinabol (retest)
Oleksiy Torokhtiy	UKR	WLT	2008—2012	2012 London - 105 kgs - Turinabol (retest)
Marina Trandenkova	RUS EUN	ATH	1992—2000	1996 Atlanta – 100 metres (5). Bromantan (ß-agonist). A reprimand was given but the placement was allowed to stand.
Mauro Trentini	ITA	CTR	1996	2000 Sydney – Out-of-competition positive. Individual Pursuit (DNS). Increased hematocrit levels (>50.0).
Aleksandr Tretyakov	RUS	SKE	2006—2014	2014 Sochi – Men (1) - Involved in scheme involving switched samples
Dmitry Trunenkov	RUS	BOB	2010—2014	2014 Sochi – Four-man (1) - Involved in scheme involving switched samples
Svetlana Tsarukayeva	RUS	WLT	2008—2012	2012 London – 63kg (2) - Turinabol (retest)
Raul Tsirek'idze	GEO	WLT	2008—2012	2012 London – 85kg (9) - Turinabol (retest)
Athanasia Tsoumeleka	GRE	ATH	2004—2008	2008 Beijing – 20-km walk (9). CERA re-test + plus + test 10 d after Olympics.
Marharyta Tverdokhlib	UKR	ATH	2012	2012 London – Long jump (25) - Turinabol and stanozolol (retest)
Gian Paolo Urlando	ITA	ATH	1976—1984	1984 Los Angeles – Hammer Throw (4). Testosterone (anabolic steroid).
Binnaz Uslu	TUR	ATH	2004—2012	2012 London – 3000m SC (r1-15th) - Retroactively stripped of all her results from 2009 to 2013 for irregularities on her Athlete Biological Passport
Svetlana Usovich	BLR	ATH	2004—2012	2008 Beijing – 800m (h2 8th r2/3) 4x400 (4) - Turinabol (retest)
Almas Uteshov	KAZ	WLT	2012	2012 London – 94kg (7) - Turinabol and Stanozolol (retest)
Martti Vainio	FIN	ATH	1976—1984	1984 Los Angeles – 10,000 metres (2). Methenolone (anabolic steroid).
Norayr Vardanyan	ARM	WLT	2012	2012 London – 94kg (11) - Turinabol (retest)
Andreas Veerpalu	EST	CCS/MIX	2012—2018	2018 Pyeonchang - 15 km (56) 30 km (46) 50 km (37) 4 x 10 km (12) - Involved in a scheme using a prohibited method (blood doping) prior to the Games
Anna Verouli	GRE	ATH	1984—1992	1984 Los Angeles – Javelin Throw (13 QR / DNQ). Nandrolone (anabolic steroid).
Olga Vilukhina	RUS	BIA	2014	2014 Sochi - 7.5 km (2), 10km (7), 12.5km (21), women’s relay (2), mixed relay (4) - Involved in scheme involving switched samples
Yekaterina Volkova	RUS	ATH	2008	2008 Beijing – 3000m SC - Turinabol (retest)
Aleksey Voyevoda	RUS	BOB	2006—2014	2014 Sochi - Two-man (1), Four-man (1) - Involved in scheme involving switched samples
Maksim Vylegzhanin	RUS	CCS	2010—2014	2014 Sochi – 30km skiathlon (4), 50km (2), 4x10 relay (2), team sprint (2) - Involved in scheme involving switched samples
Achim Walcher	AUT	CCS	1998—2002	2002 Salt Lake City – 30 km. / Pursuit (30K (45) / Pursuit (43)). Blood doping.
Wang Jiali	CHN	ATH	2012	2012 London – Marathon (58th) - Retroactively stripped of all her results from May 2012 to 2014 for irregularities on her Athlete Biological Passport
Alex Watson	AUS	MOP	1984—1992	1988 Seoul – Individual (61). Caffeine (stimulant).
Wu Dan	CHN	VOL	1988—2000	1992 Barcelona – Volleyball (7). Stimulant with a strychnine base.
Valentin Xristov	AZE	WLT	2012	2012 London - 56kg (3) - Turinabol (retest)
Narsingh Yadav	IND	WRE	2012—2016	2016 Rio – 74 kgs (DNS) - Methandienone
Nevin Yanıt	TUR	ATH	2008—2012	2012 London – 100m hurdles (5) - Tested positive for Stanozolol in 2013. An investigation revealed multiple doping violations dating back to June 2012. In 2017 the IOC revealed she had also tested positive for an illegal substance at the 2012 Olympics.
Irina Yatchenko	BLR EUN	ATH	1992—2008	2004 Athínai – Discus Throw (3). Methandienone metabolite (anabolic steroid). Disqualified in December 2012 after re-testing of samples from the 2004 Olympics.
Igor Yerokhin	RUS	ATH	2008—2012	London 2012 – 50km walk (5) - Retroactively stripped of all his results from 2011 onwards for irregularities on his Athlete Biological Passport
Nadezhda Yevstyukhina	RUS	WLT	2008—2012	2008 Beijing – 74kg (3) - Turinabol (retest)
Jerome Young	USA	ATH	2000	2000 Sydney – 4x400 metre relay (4x400 (1)). Nandrolone (anabolic steroid). DQed in June 2004 from 26 June 1999 to 25 June 2001, but medal later reinstated to his teammates, until doping offense revealed by Antonio Pettigrew.
Denys Yurchenko	UKR	ATH	2000—2012	2008 Beijing – Pole vault (3) - Turinabol (retest)
Ivan Yushkov	RUS	ATH	2004—2008	2008 Beijing – Shot Put (10) - Turinabol (retest)
Nataliya Zabolotnaya	RUS	WLT	2004—2012	2012 London – 75kg (2) - Turinabol (retest)
İntiqam Zairov	AZE	WLT	2008—2012	2008 Beijing – 84kg (9) - Turinabol (retest)
İntiqam Zairov	AZE	WLT	2008—2012	2012 London – 94kg (6) - Turinabol (retest)
Daniel Zalewski	POL	BOB	2014	2014 Sochi – 4-man (27) - Phenylisobutylamine
Yuliya Zaripova	RUS	ATH	2012	2012 London – 3000mSC (1) - Turinabol (retest) but also retroactively stripped of all her results from 2011 to 2013 for irregularities on her Athlete Biological Passport
Olga Zaytseva	RUS	BIA	2002—2014	2014 Sochi - 7.5 km (28), 10km (11), 12.5km (23), 15km (15), mixed relay (4) women’s relay (2) - Involved in scheme involving switched samples
Olha Zemliak	UKR	ATH	2012—2016	2016 Rio – 400m (7) 4 x 400m relay (5) Retroactively stripped of all her results since July 5 2016 due to a positive test for excessive testosterone
Yevgeny Zhernosek	BLR	WLT	2012	2012 London – 105kg (9) - Turinabol (retest)
Tomasz Zieliński	POL	WLT	2012—2016	2016 Rio – 94 kgs (DNS) - 19-Norandrosterone.
Aleksandr Zubkov	RUS	BOB/LUG	1998—2014	2014 Sochi - Two-man (1), Four-man (1) - Involved in scheme involving switched samples
Đỗ Thị Ngân Thương	VIE	GYM	2008—2012	2008 Beijing – All-Around (59). Furosemide (Lasix) (diuretic, masking agent).