Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Annette Klug | FRG |
FEN | Olympics | 1988 | 0–1–0 1989 Duisburg FEN silver: foil team |
| Oleksandr Klymenko | UKR EUN |
ATH | Olympics | 1992—1996 | 2–0–0 1991 Sheffield ATH gold: shot put (competed for the Soviet Union); 1993 Buffalo ATH gold: shot put (competed for Ukraine) |
| Iryna Klymets | UKR |
ATH | Olympics | 2016—2020 | 1–0–0 2019 Napoli ATH gold: hammer throw |
| Svetlana Klyuka | RUS |
ATH | Olympics | 2008 | 1–0–0 2005 İzmir ATH gold: 800 m |
| Svetlana Klyukina | RUS |
GAR | Olympics | 2008 | 0–1–0 2009 Beograd GYM silver: team |
| Edina Knapek | HUN |
FEN | Olympics | 2000—2016 | 1–0–0 1997 Catania FEN gold: foil team |
| Andro Knego | CRO YUG |
BKB | Olympics | 1976—1984 | 0–1–0 1979 Ciudad de México BAS silver |
| Alan Knipe | USA |
VVO | Coach | 2012 | 0–1–0 1991 Sheffield VOL silver |
| Angelika Knipping | FRG |
SWM | Olympics | 1984 | 1–0–0 1981 București SWI gold: 100 m breaststroke |
| Silke Knoll | GER FRG |
ATH | Olympics | 1988—1996 | 0–0–1 1989 Duisburg ATH bronze: 4×100 m relay (competed for West Germany) |
| Anna Knoroz | RUS |
ATH | Olympics | 1996 | 0–1–1 1991 Sheffield ATH silver: 4×400 m relay, bronze: 400 m hurdles (competed as Anna Chuprina for the Soviet Union) |
| Jeremy Knowles | BAH |
SWM | Olympics | 2000—2008 | 0–0–1 2003 Daegu SWI bronze: 200 m butterfly |
| Linda Knowles | GBR |
ATH | Olympics | 1964 | 0–1–0 1967 Tokyo ATH silver: high jump |
| Marthe Koala | BUR |
ATH | Olympics | 2012—2020 | 0–1–0 2019 Napoli ATH silver: heptathlon |
| Kenji Kobase | JPN |
SWM | Olympics | 2016 | 1–0–0 2011 Shenzhen SWI gold: 4×100 m medley relay (swam in heats only) |
| Yuki Kobori | JPN |
SWM | Olympics | 2012—2016 | 1–0–1 2017 Taipei SWI gold: 4×200 m freestyle relay, bronze: 4×100 m medley relay |
| Hakan Koç | TUR |
WRE | Olympics | 2008 | 0–1–0 2005 İzmir WRE silver: freestyle heavyweight -96 kg |
| Alexander Koch | GER |
FEN | Olympics | 1992—1996 | 0–1–0 1993 Buffalo FEN silver: foil |
| Marita Koch | GDR |
ATH | Olympics | 1976—1980 | 1–0–0 1979 Ciudad de México ATH gold: 200 m |
| Olga Kochneva | RUS |
FEN | Olympics | 2016 | 0–1–1 2009 Beograd FEN silver: épée team, bronze: épée |
| Flavius Koczi | ROU |
GAR | Olympics | 2008—2012 | 3–0–3 2009 Beograd GYM gold: vault, bronze: parallel bars; 2011 Shenzhen GYM gold: floor and vault, bronze: pommelled horse and team |
| Hans Koeleman | NED |
ATH | Olympics | 1984—1988 | 0–0–1 1985 Kobe ATH bronze: 3000 m steeplechase |
| Marko Koers | NED |
ATH | Olympics | 1992—2000 | 1–0–0 1993 Buffalo ATH gold: 800 m |
| Wilfried Koffi | CIV |
ATH | Olympics | 2016 | 1–0–1 2013 Kazan ATH bronze: 100 m; 2015 Gwangju ATH gold: 200 m |
| Junya Koga | JPN |
SWM | Olympics | 2016 | 1–1–1 2007 Bangkok SWI silver: 50 m backstroke; 2009 Beograd gold: 50 m backstroke, bronze: 100 m backstroke |
| Sarah Köhler | GER |
SWM | Olympics | 2016—2020 | 1–2–0 2017 Taipei SWI gold: 400 m freestyle, silver: 800 m freestyle and 1500 m freestyle |
| Fabienne Kohlmann | GER |
ATH | Olympics | 2012—2016 | 0–0–1 2015 Gwangju ATH bronze: 800 m |
| Carsten Köhrbrück | GER |
ATH | Olympics | 1992 | 0–0–1 1989 Duisburg ATH bronze: 4×400 m relay (competed for West Germany) |
| Yoko Koikawa | JPN |
SWM | Olympics | 1992 | 1–5–1 1993 Buffalo SWI silver: 100 m backstroke and 4×100 m medley relay, bronze: 200 m backstroke; 1995 Fukuoka SWI gold: 200 m backstroke, silver: 100 m backstroke, 4×200 m freestyle relay, and 4×100 m medley relay |
| Isao Koizumi | JPN |
VVO | Olympics | 1968 | 1–0–0 1967 Tokyo VOL gold |
| Marek Kolbowicz | POL |
ROW | Olympics | 1996—2012 | 0–0–1 1993 Buffalo ROW bronze: quadruple sculls |
| Lyudmila Kolchanova | RUS |
ATH | Olympics | 2012 | 1–0–0 2005 İzmir ATH gold: long jump |
| Ernő Kolczonay | HUN |
FEN | Olympics | 1980—1992 | 2–0–1 1979 Ciudad de México FEN gold: épée and épée team; 1981 București FEN bronze: épée |
| Olena Kolesnichenko | UKR |
ATH | Olympics / YOG | 2010—2016 | 0–0–1 2017 Taipei ATH bronze: 400 m hurdles |
| Svetlana Kolesnichenko | ROC RUS |
SWA | Olympics | 2016—2020 | 2–0–0 2013 Kazan SYN gold: duet and team |
| Nikolay Kolesnikov | RUS URS |
ATH | Olympics | 1976 | 2–0–0 1975 Roma ATH gold: 4×100 m relay; 1977 Sofia ATH gold: 4×100 m relay |
| Nadezhda Kolesnikova-Ilyina | RUS URS |
ATH | Olympics | 1972—1976 | 1–0–0 1973 Moskva ATH gold: 400 m (competed as Nadezhda Kolesnikova) |
| Pavel Kolobkov | RUS URS EUN |
FEN | Olympics | 1988—2004 | 2–1–0 1991 Sheffield FEN gold: épée, silver: épée team (competed for the Soviet Union); 1995 Fukuoka FEN gold: épée (competed for Russia) |
| Kinga Kołosińska | POL |
VBV | Olympics | 2016 | 0–1–0 2013 Kazan BVO silver |
| Tatyana Kolpakova | KGZ URS |
ATH | Olympics | 1980 | 1–0–0 1981 București ATH gold: long jump |
| Yuliya Koltunova | RUS |
DIV | Olympics | 2004—2012 | 1–1–0 2013 Kazan DIV gold: platform, silver: synchronized platform |
| Alina Komashchuk | UKR |
FEN | Olympics / YOG / Other | 2010—2016 | 0–1–0 2011 Shenzhen FEN silver: sabre team |
| Rachel Komisarz | USA |
SWM | Olympics | 2004 | 1–3–1 2001 Beijing SWI gold: 4×200 m freestyle relay, silver: 400 m freestyle, 1500 m freestyle, and 50 m butterfly, bronze: 100 m butterfly |
| Vera Komisova | RUS URS |
ATH | Olympics | 1980 | 1–0–1 1979 Ciudad de México ATH gold: 4×100 m relay, bronze: 100 m hurdles |
| Sergey Komissarov | ROC RUS |
SAL | Olympics | 2016—2020 | 0–0–1 2011 Shenzhen SAI bronze: Laser Standard |
| Jelica Komnenović | SRB YUG |
BKB | Olympics | 1980—1984 | 1–0–1 1983 Edmonton BAS bronze; 1987 Zagreb BAS gold |
| Nanthana Komwong | THA |
TTE | Olympics | 2000—2016 | 0–0–1 2007 Bangkok TTN bronze: singles |
| Gennady Kondrashov | RUS URS |
ATH | Olympics | 1968 | 1–2–0 1961 Sofia ATH silver: hammer throw; 1963 Porto Alegre ATH gold: hammer throw; 1965 Budapest ATH silver: hammer throw |
| Nataliya Kondratyeva | RUS |
JUD | Olympics | 2012 | 0–1–1 2007 Bangkok JUD silver: extra-lightweight -48 kg, bronze: team |
| Yekaterina Kondratyeva | RUS |
ATH | Olympics | 2004 | 1–1–0 2003 Daegu ATH gold: 4×400 m relay, silver: 200 m |
| Gaoussou Koné | CIV |
ATH | Olympics | 1964—1972 | 1–0–0 1967 Tokyo ATH gold: 100 m |
| Kong Hye-Ok | PRK |
FBL | Olympics | 2008 | 1–0–0 2003 Daegu FTB gold |
| Hiroyuki Konishi | JPN |
GAR | Olympics | 1988 | 0–0–1 1987 Zagreb GYM bronze: team |
| Keitaro Konnai | JPN |
SWM | Olympics | 1996 | 0–1–1 1999 Palma de Mallorca SWI silver: 100 m backstroke, bronze: 4×100 m medley relay |
| Ilya Konovalov | RUS |
ATH | Olympics | 1996—2004 | 0–0–1 1997 Catania ATH bronze: hammer throw |
| Ferenc Konrád | HUN |
WPO | Olympics | 1968—1976 | 1–0–0 1965 Budapest WAP gold |
| János Konrád | HUN |
SWM/WPO | Olympics / Coach | 1960—1992 | 2–1–1 1959 Torino WAP silver; 1961 Sofia WAP bronze; 1963 Porto Alegre WAP gold; 1965 Budapest WAP gold |
| Svetlana Kopchikova | URS UKR |
SWM | Olympics | 1988 | 3–0–0 1985 Kobe SWI gold: 200 m medley, 4×100 m freestyle relay, and 4×200 m freestyle relay |
| Kerstin Köppen | GER |
ROW | Olympics | 1992—1996 | 0–0–1 1989 Duisburg ROW bronze: quadruple sculls |
| Malwina Kopron | POL |
ATH | Olympics | 2016—2020 | 1–1–0 2017 Taipei ATH gold: hammer throw; 2019 Napoli ATH silver: hammer throw |
| Yevgeny Koptelov | RUS |
SWM | Olympics | 2016 | 4–0–1 2013 Kazan SWI gold: 4×100 m medley relay, bronze: 100 m butterfly; 2015 Gwangju SWI gold: 100 m butterfly, 200 m butterfly, and 4×100 m medley relay |
| Salomé Kora | SUI |
ATH | Olympics | 2016—2020 | 2–0–1 2017 Taipei ATH gold: 4×100 m relay, bronze: 100 m; 2019 Napoli ATH gold: 4×100 m relay |
| Gennady Korban | RUS URS |
WRE | Olympics | 1980 | 1–0–0 1973 Moskva WRE gold: Greco-Roman welterweight -74 kg |
| Olga Korbut | BLR URS |
GAR | Olympics | 1972—1976 | 5–0–1 1973 Moskva GYM gold: all-around, floor, uneven bars, balance beam, and team, bronze: horse vault |
| Oleksandr Korchmid | UKR |
ATH | Olympics | 2004—2008 | 1–0–1 2003 Daegu ATH gold: pole vault; 2005 İzmir ATH bronze: pole vault |
| Dane Korica | CRO YUG |
ATH | Olympics | 1972 | 1–0–0 1973 Moskva ATH gold: 10000 m |
| Mikheil Korkia | GEO URS |
BKB | Olympics | 1972—1976 | 0–1–0 1973 Moskva BAS silver |
| Csaba Körmöczi | HUN |
FEN | Olympics | 1976 | 0–1–0 1970 Torino FEN silver: sabre team |
| Aleksandr Kornelyuk | AZE URS |
ATH | Olympics | 1972 | 0–0–1 1970 Torino ATH bronze: 4×100 m relay |
| Ihor Korobchinskyi | UKR EUN |
GAR | Olympics | 1992—1996 | 1–0–1 1993 Buffalo GYM gold: floor, bronze: all-around (competed for Ukraine) |
| Larisa Korobeynikova | ROC RUS |
FEN | Olympics | 2012—2020 | 1–2–0 2009 Beograd FEN silver: foil team; 2013 Kazan FEN gold: foil team, silver: foil |
| Darya Korobova | RUS |
SWA | Olympics | 2012 | 2–0–0 2013 Kazan SYN gold: team and team Free Routine Combination |
| Ibolya Korodi | ROU |
ATH | Olympics | 1980 | 0–0–1 1981 București ATH bronze: 4×400 m relay |
| Mariya Koroleva | USA |
SWA | Olympics | 2012—2016 | 0–0–1 2013 Kazan SYN bronze: team |
| Svetlana Korolyova-Babich | RUS URS |
ATH | Olympics | 1972—1976 | 1–0–0 1973 Moskva ATH gold: javelin throw (competed as Svetlana Korolyova) |
| Yuliya Korostylova | UKR |
SHO | Olympics | 2004 | 1–0–2 2007 Bangkok SHO gold: 10 m air pistol team, bronze: 25 m sporting pistol team; 2011 Shenzhen SHO bronze: 10 m air pistol team |
| Sergey Korotkikh | RUS EUN |
ROW | Olympics | 1992 | 0–1–0 1989 Duisburg ROW silver: eights |
| Vladimir Korotkov | RUS URS |
TEN | Non-Medal | 1968 | 1–0–0 1973 Moscow TEN gold: doubles |
| Olga Korotkova | URS |
ATH | Non-starter | 1980 | 1–0–0 1979 Ciudad de México ATH gold: 4×100 m relay |
| Maksym Korotun | UKR |
JUD | Olympics | 2008 | 0–1–0 2007 Bangkok JUD silver: extra-lightweight -60 kg |
| Yevgeny Korotyshkin | RUS |
SWM | Olympics | 2004—2012 | 1–3–2 2003 Daegu SWI silver: 100 m butterfly and 4×100 m medley relay, bronze: 50 m butterfly; 2005 İzmir SWI silver: 50 m butterfly; 2007 Bangkok SWI gold: 4×100 m medley relay, bronze: 50 m butterfly |
| Yekaterina Korshunova | RUS |
SHO | Olympics | 2016 | 2–0–0 2013 Kazan SHO gold: 10 m air pistol team and 25 m sporting pistol team |
| Dirk Korthals | FRG |
SWM | Olympics | 1984 | 0–2–0 1985 Kobe SWI silver: 4×100 m freestyle relay and 4×200 m freestyle relay |
| Sergey Koryazhkin | RUS URS |
FEN | Olympics | 1988 | 2–1–0 1981 București FEN silver: sabre team; 1983 Edmonton FEN gold: sabre team; 1985 Kobe FEN gold: sabre team |
| Paweł Korzeniowski | POL |
SWM | Olympics / Other | 2004—2020 | 3–0–2 2005 İzmir SWI gold: 200 m butterfly; 2009 Beograd SWI gold: 200 m butterfly; 2011 Shenzhen SWI bronze: 100 m butterfly; 2013 Kazan SWI gold: 100 m butterfly, bronze: 200 m freestyle |
| Robert Korzeniowski | POL |
ATH | Olympics / Other | 1992—2004 | 2–0–0 1991 Sheffield ATH gold: 20 km; 1993 Buffalo ATH gold: 20 km |
| Irina Korzhanenko | RUS |
ATH | Olympics | 1996—2004 | 1–0–0 1997 Catania ATH gold: shot put |
| Zdeněk Kos | CZE TCH |
BKB | Olympics | 1972—1980 | 0–0–1 1977 Sofia BAS bronze |
| Robert Kościelniakowski | POL |
FEN | Olympics | 1988—1992 | 1–0–0 1989 Duisburg FEN gold: sabre team |
| Yasuhiro Koseki | JPN |
SWM | Olympics | 2016 | 1–1–0 2013 Kazan SWI gold: 100 m breaststroke, silver: 4×100 m medley relay |
| Aleksandr Kosenkov | BLR URS |
DIV | Olympics | 1976—1980 | 1–0–1 1977 Sofia DIV bronze: 3 m springboard; 1979 Ciudad de México DIV gold: 3 m springboard |
| Rimma Koshelyova | RUS URS |
ATH | Olympics | 1960 | 1–1–0 1961 Sofia ATH gold: 4×100 m relay, silver: 80 m hurdles |
| Dmitry Kosov | RUS EUN |
ATH | Olympics | 1992—1996 | 0–1–1 1995 Fukuoka ATH silver: 4×400 m relay, bronze: 400 m (competed for Russia) |
| Yekaterina Kostetskaya | RUS |
ATH | Olympics | 2008—2012 | 1–1–0 2005 İzmir ATH gold: 4×400 m relay (ran in heats only); 2007 Bangkok ATH silver: 800 m |
| Olena Kostevych | UKR |
SHO | Olympics / Other | 2004—2020 | 3–2–4 2007 Bangkok SHO gold: 10 m air pistol team, silver: 10 m air pistol, bronze: 25 m sporting pistol team; 2011 Shenzhen SHO gold: 25 m sporting pistol team, bronze: 10 m air pistol, 25 m sporting pistol, and 10 m air pistol team; 2013 Kazan gold: 25 m sporting pistol, silver: 25 m sporting pistol team |
| Irina Kostyuchenkova | URS UKR EUN |
ATH | Olympics | 1988—1992 | 1–0–0 1987 Zagreb ATH gold: javelin throw (competed for the Soviet Union) |
| Dietmar Koszewski | GER |
ATH | Olympics | 1992 | 1–0–0 1993 Buffalo ATH gold: 110 m hurdles |
| Anatoly Koteshev | RUS URS |
FEN | Olympics | 1972 | 1–0–0 1970 Torino FEN gold: foil team |
| Olga Kotlyarova | RUS |
ATH | Olympics / Non-starter | 1996—2004 | 1–1–0 1997 Catania ATH gold: 4×400 m relay, silver: 400 m |
| Ditte Kotzian | GER |
DIV | Olympics | 2000—2008 | 0–2–1 2001 Beijing DIV silver: synchronized springboard; 2003 Daegu DIV silver: synchronized springboard, bronze: 3 m springboard |
| Klaus Kotzmann | GDR |
FEN | Olympics | 1980 | 0–0–1 1979 Ciudad de México FEN bronze: foil team |
| Antonios Kounadis | GRE |
ATH | Olympics | 1960 | 1–0–0 1959 Torino ATH gold: discus throw |
| Igor Kovačević | FRA |
WPO | Olympics | 2016 | 0–0–1 2009 Beograd WAP bronze |
| Annamária Kovács-Tóth | HUN |
ATH | Olympics | 1968 | 0–1–1 1965 Budapest ATH silver: pentathlon, bronze: 4×100 m relay (competed as Annamária Kovács) |
| Attila Kovács | HUN |
FEN | Olympics | 1964 | 4–0–1 1959 Torino FEN gold: sabre team; 1961 Sofia FEN gold: sabre team; 1963 Porto Alegre FEN gold: sabre team; 1965 Budapest FEN gold: sabre team, bronze: sabre |
| Dusán Kovács | HUN |
ATH | Olympics | 1996 | 0–0–2 1993 Buffalo ATH bronze: 400 m hurdles and 4×400 m relay |
| Edit Kovács | HUN |
FEN | Olympics | 1976—1988 | 0–0–1 1981 București FEN bronze: foil team |
| Iván Kovács | HUN |
FEN | Olympics | 1992—2008 | 1–1–1 1993 Buffalo FEN silver: épée team; 1995 Fukuoka FEN gold: épée team, bronze: épée |
| Péter Kovács | HUN |
GAR | Olympics | 1980 | 0–1–0 1979 Ciudad de México GYM silver: parallel bars |
| Tamás Kovács | HUN |
FEN | Olympics / Referee | 1968—1984 | 1–0–0 1965 Budapest FEN gold: sabre team |
| Anastasiya Koval | UKR |
GAR | Olympics | 2008 | 0–1–0 2011 Shenzhen GYM silver: team |
| Viktoriya Koval | UKR |
ARC | Olympics | 2008 | 0–3–1 2005 İzmir ARC silver: recurve team, bronze: recurve; 2009 Beograd ARC silver: recurve team and recurve mixed team |
| Nazar Kovalenko | UKR |
ATH | Olympics | 2012—2016 | 1–1–0 2013 Kazan ATH silver: 20 km walk team; 2015 Gwangju ATH gold: 20 km walk team |
| Sergey Kovalenko | URS |
BKB | Olympics | 1968—1972 | 0–1–0 1973 Moskva BAS silver |
| Ainārs Kovals | LAT |
ATH | Olympics | 2008—2012 | 2–0–1 2005 İzmir ATH gold: javelin throw; 2007 Bangkok ATH bronze: javelin throw; 2009 Beograd ATH gold: javelin throw |
| Nikolay Kovalyov | RUS |
FEN | Olympics | 2008—2016 | 1–0–1 2007 Bangkok FEN bronze: sabre team; 2013 Kazan FEN gold: sabre team |
| Csaba Köves | HUN |
FEN | Olympics | 1992—2000 | 0–1–1 1991 Sheffield FEN silver: sabre; 1993 Buffalo FEN bronze: sabre team |
| Jerzy Kowalewski | POL |
DIV | Olympics | 1960—1968 | 0–0–1 1965 Budapest DIV bronze: platform |
| Takaharu Koyama | JPN |
ATH | Olympics | 1972—1976 | 0–0–1 1970 Torino ATH bronze: 3000 m steeplechase |
| Władysław Kozakiewicz | POL |
ATH | Olympics | 1976—1980 | 2–0–0 1977 Sofia ATH gold: pole vault; 1979 Ciudad de México ATH gold: pole vault |
| Olga Kozakova | URS UKR |
VVO | Olympics | 1976 | 2–0–0 1973 Moskva VOL gold; 1977 Sofia VOL gold |
| Inha Kozhokhina | UKR |
GRY | Olympics | 2004 | 1–2–2 2005 İzmir RGY silver: group 5 ribbons, bronze: group and group 2 clubs + 3 hoops; 2007 Bangkok RGY gold: group 5 hoops, silver: group all-around |
| Alina Kozich | UKR |
GAR | Olympics | 2004—2008 | 0–1–0 2007 Bangkok GYM silver: team |
| Lech Koziejowski | POL |
FEN | Olympics | 1972—1980 | 0–2–0 1973 Moskva FEN silver: foil team; 1977 Sofia FEN silver: foil team |
| Yekaterina Kramarenko | RUS |
GAR | Olympics | 2008 | 2–0–0 2015 Gwangju GYM gold: uneven bars and team |
| Ivan Krapić | CRO |
WPO | Olympics | 2016 | 0–1–0 2009 Beograd WAP silver |
| Juttaporn Krasaeyan | THA |
ATH | Olympics | 2004 | 1–0–0 1995 Fukuoka ATH gold: shot put (competed as Wu Xianchun for China) |
| Aleksandr Krasnov | RUS URS |
CTR | Olympics | 1980 | 1–0–0 1983 Edmonton CYC gold: 4000 m individual pursuit |
| Vladimir Krasnov | RUS |
ATH | Olympics | 2012 | 2–0–0 2013 Kazan ATH gold: 400 m and 4×400 m relay |
| Sergey Krasyuk | URS UKR |
SWM | Olympics | 1980 | 2–2–0 1981 București SWI gold: 4×100 m medley relay, silver: 100 m freestyle and 4×100 m freestyle relay; 1983 Edmonton SWI gold: 4×100 m freestyle relay |
| Angelika Kraus | FRG |
SWM | Olympics | 1968—1972 | 0–0–1 1973 Moskva SWI bronze: 4×100 m medley relay |
| Michael Kraus | FRG |
SWM | Olympics | 1976 | 1–1–0 1977 Sofia SWI gold: 200 m butterfly; 1979 Ciudad de México SWI silver: 200 m butterfly |
| Anzhela Kravchenko | UKR |
ATH | Olympics / Non-starter | 2000—2004 | 0–1–0 1997 Catania ATH silver: 100 m |
| Valery Kravchenko | KAZ URS |
VVO | Olympics | 1968—1972 | 1–0–0 1965 Budapest VOL gold |
| Sergey Kravchuk | UKR EUN |
FEN | Olympics | 1992 | 1–0–0 1985 Kobe FEN gold: épée team (competed for the Soviet Union) |
| Inesa Kravets | URS UKR EUN |
ATH | Olympics | 1988—1996 | 1–0–0 1991 Sheffield ATH gold: long jump (competed for the Soviet Union) |
| Grzegorz Krawców | POL |
CSP | Olympics | 1988—1992 | 1–1–0 1987 Zagreb CAN gold: K4 500 m, silver: K4 1000 m |
| Andrey Kraytor | RUS |
CSP | Olympics | 2016 | 1–1–0 2013 Kazan CAN gold: C4 200 m, silver: C1 200 m |
| Sejad Krdžalić | YUG |
ATH | Olympics | 1984—1988 | 0–1–0 1987 Zagreb ATH silver: javelin throw |
| Wolfgang Kreißig | GER |
ATH | Olympics | 1996—2000 | 0–1–0 1995 Fukuoka ATH silver: high jump |
| Mitzi Kremer | USA |
SWM | Olympics | 1988 | 2–3–0 1987 Zagreb SWI gold: 100 m freestyle and 4×200 m freestyle relay, silver: 200 m freestyle, 400 m freestyle, and 4×100 m freestyle relay |
| Nataliya Kresova-Rusakova | RUS |
ATH | Olympics | 2004—2012 | 0–0–1 2003 Daegu ATH bronze: 100 m hurdles (competed as Nataliya Kresova) |
| Yuliya Krevsun | UKR |
ATH | Olympics | 2008—2012 | 1–0–0 2007 Bangkok ATH gold: 800 m |
| Lothar Krieg | FRG |
ATH | Olympics | 1976 | 0–0–1 1977 Sofia ATH bronze: 4×400 m relay |
| Anatoli Krikun | EST URS |
BKB | Olympics | 1968 | 1–0–0 1970 Torino BAS gold |
| Svetlana Krivelyova | RUS EUN |
ATH | Olympics | 1992—2004 | 1–0–0 1991 Sheffield ATH gold: shot put (competed for the Soviet Union) |
| Andrey Krivov | RUS |
ATH | Olympics | 2012 | 2–0–0 2013 Kazan ATH gold: 20 km walk and 20 km walk team |
| Vladimir Krivtsov | AZE URS |
SWM | Olympics | 1972 | 1–1–0 1973 Moskva SWI gold: 4×200 m freestyle relay, silver: 4×100 m freestyle relay |
| DoDo Krnáč | SVK |
JUD | Olympics | 2004 | 0–0–2 1999 Palma de Mallorca JUD bronze: half-lightweight -66 kg; 2003 Daegu JUD bronze: half-lightweight -66 kg |
| Hans Kroes | NED |
SWM | Olympics | 1984—1988 | 0–3–1 1987 Zagreb SWI silver: 50 m freestyle, 4×100 m freestyle relay, and 4×200 m freestyle relay, bronze: 100 m freestyle |
| Wiesław Król | POL |
ATH | Olympics | 1960 | 0–0–2 1959 Torino ATH bronze: 400 m hurdles; 1961 Sofia ATH bronze: 110 m hurdles |
| Robert Kronberg | SWE |
ATH | Olympics | 2000—2004 | 0–0–1 2001 Beijing ATH bronze: 110 m hurdles |
| Ștefan Kroner | ROU |
WPO | Olympics | 1960—1964 | 0–0–1 1965 Budapest WAP bronze |
| Stano Kropilák | TCH SVK |
BKB | Olympics | 1976—1980 | 0–0–1 1977 Sofia BAS bronze |
| Viktor Krovopuskov | RUS URS |
FEN | Olympics | 1976—1980 | 2–0–0 1970 Torino FEN gold: sabre team; 1973 Moskva FEN gold: sabre team |
| Lukáš Krpálek | CZE |
JUD | Olympics / Other | 2012—2020 | 2–0–0 2013 Kazan JUD gold: half-heavyweight -100 kg and open class |
| Nataša Krsmanović | SRB |
VVO | Olympics | 2008—2012 | 0–1–0 2009 Beograd VOL silver |
| Frantz Kruger | FIN RSA |
ATH | Olympics | 2000—2008 | 1–0–0 1999 Palma de Mallorca ATH gold: discus throw (competed for South Africa) |
| Sergey Kruglov | RUS |
SHO | Olympics | 2008 | 1–3–2 2007 Bangkok SHO gold: 10 m air rifle team, silver: 10 m air rifle, bronze: 50 m rifle three positions team; 2013 Kazan silver: 10 m air rifle team and 50 m rifle three positions team, bronze: 10 m air rifle |
| Oleksiy Kruhliak | UKR |
FEN | Olympics | 2000 | 1–0–0 1997 Catania FEN gold: foil team |
| Annerose Krumpholz | GDR |
ATH | Olympics | 1972 | 0–1–1 1973 Moskva ATH silver: 100 m hurdles, bronze: 4×100 m relay |
| Pavel Krupko | BLR URS |
ROW | Olympics | 1988 | 0–1–0 1987 Zagreb ROW silver: quadruple sculls |
| Oleksandr Krykun | UKR |
ATH | Olympics | 1996—2004 | 0–1–0 1995 Fukuoka ATH silver: hammer throw |
| Kamil Kryński | POL |
ATH | Olympics | 2012 | 0–1–1 2013 Kazan ATH bronze: 4×100 m relay; 2015 Gwangju ATH silver: 4×100 m relay |
| Nikolay Kryukov | RUS |
GAR | Olympics | 1996—2008 | 2–3–0 1999 Palma de Mallorca GYM gold: parallel bars and horizontal bar, silver: all-around, horse vault, and team |
| Olena Kryvytska | UKR |
FEN | Olympics | 2012—2020 | 2–1–1 2007 Bangkok FEN gold: épée team; 2009 Beograd FEN gold: épée team; 2011 Shenzhen FEN silver: épée; 2013 Kazan FEN bronze: épée team |
| Andrzej Krzepiński | POL |
ROW | Olympics | 1988—1992 | 1–0–0 1987 Zagreb ROW gold: quadruple sculls |
| Adam Krzesiński | POL |
FEN | Olympics | 1992—2000 | 0–0–1 1991 Sheffield FEN bronze: foil team |
| Robert Kubaczyk | POL |
ATH | Olympics / Non-starter | 2008—2012 | 0–1–0 2009 Beograd ATH silver: 4×100 m relay |
| Dariusz Kuć | POL |
ATH | Olympics | 2008—2012 | 0–1–1 2009 Beograd ATH silver: 4×100 m relay; 2013 Kazan ATH bronze: 4×100 m relay |
| Martin Kučera | SVK |
ATH | Olympics | 2016 | 1–0–0 2013 Kazan ATH gold: 400 m hurdles |
| Beata Kucharzewska | POL |
JUD | Olympics | 1996 | 0–0–1 1995 Fukuoka JUD bronze: team |
| Nina Kucheran | CAN |
SWM | YOG | 2018 | 0–0–1 2019 Napoli SWI bronze: 4×100 m medley relay |
| Mariya Kuchina-Lasitskene | ROC RUS |
ATH | Olympics / YOG | 2010—2020 | 0–1–0 2013 Kazan ATH silver: high jump |
| Sławomir Kuczko | POL |
SWM | Olympics | 2012 | 1–0–0 2005 İzmir SWI gold: 200 m breaststroke |
| Tatyana Kudashova-Minina | ROC RUS |
TKW | Olympics / YOG | 2014—2020 | 0–1–0 2015 Gwangju TKW silver: Kyorugi team |
| Aigars Kudis | LAT URS |
SWM | Olympics | 1976 | 0–0–1 1977 Sofia SWI bronze: 200 m breaststroke |
| Michał Kudła | POL |
CSP | Olympics | 2016 | 0–0–1 2013 Kazan CAN bronze: C4 1000 m |
| Nataliya Kudreva | RUS URS |
VVO | Olympics | 1972 | 1–0–0 1970 Torino VOL gold |
| Sergey Kudryayev | RUS URS |
SWM | Olympics | 1988 | 1–0–0 1991 Sheffield SWI gold: 4×200 m freestyle relay |
| Jouko Kuha | FIN |
ATH | Non-starter | 1968 | 1–0–0 1967 Tokyo ATH gold: 3000 m steeplechase |
| André Kuhn | SUI |
FEN | Olympics | 1988—1992 | 0–1–0 1981 București FEN silver: épée team |
| Kui Yuanyuan | CHN |
GAR | Olympics | 1996—2000 | 0–0–1 1999 Palma de Mallorca GYM bronze: team |
| Mariusz Kujawski | POL |
CSP | Olympics | 2008 | 1–1–1 2013 Kazan CAN gold: K2 1000 m, silver: K2 500 m, bronze: K4 500 m |
| Petru Kuki | ROU |
FEN | Olympics / Referee | 1976—1996 | 0–1–0 1981 București FEN silver: foil |
| Nikolay Kuksenkov | RUS UKR |
GAR | Olympics | 2012—2016 | 4–1–0 2011 Shenzhen GYM gold: all-around, silver: horizontal bar (competed for Ukraine); 2013 Kazan GYM gold: all-around, pommelled horse, and team (competed for Russia) |
| Dainis Kūla | LAT URS |
ATH | Olympics | 1980 | 2–0–0 1981 București ATH gold: javelin throw; 1983 Edmonton ATH gold: javelin throw |
| Gergely Kulcsár | HUN |
ATH | Olympics / Other | 1960—1972 | 1–1–1 1959 Torino ATH silver: javelin throw; 1961 Sofia ATH gold: javelin throw; 1963 Porto Alegre ATH bronze: javelin throw |
| Győző Kulcsár | HUN |
FEN | Olympics | 1964—1976 | 1–2–0 1963 Porto Alegre FEN silver: foil team and épée team; 1965 Budapest FEN gold: épée team |
| Krisztián Kulcsár | HUN |
FEN | Olympics / Administrator | 1992—2022 | 1–2–0 1993 Buffalo FEN silver: épée and épée team; 1995 Fukuoka FEN gold: épée team |
| Tadeusz Kulczycki | POL |
ATH | Olympics | 1972 | 0–0–1 1973 Moskva ATH bronze: 400 m hurdles |
| Vyacheslav Kulebyakin | RUS URS |
ATH | Olympics | 1976 | 0–0–1 1977 Sofia ATH bronze: 110 m hurdles |
| Piotr Kuleta | POL |
CSP | Olympics | 2012 | 0–0–1 2013 Kazan CAN bronze: C4 1000 m |
| Nikola Kuljača | MNE SCG |
WPO | Olympics / Non-starter | 2000—2004 | 1–0–0 1995 Fukuoka WAP gold |
| Valter Külvet | EST URS |
ATH | Olympics | 1988 | 0–1–0 1985 Kobe ATH silver: decathlon |
| Yasunori Kumada | JPN |
VVO | Olympics | 1988 | 1–0–1 1981 București VOL bronze; 1985 Kobe VOL gold |
| Kagisho Kumbane | RSA |
ATH | Olympics | 2008 | 0–0–1 2009 Beograd ATH bronze: 4×100 m relay |
| Naoko Kume | JPN |
SWM | Olympics | 1984 | 0–1–1 1983 Edmonton SWI silver: 200 m butterfly, bronze: 100 m butterfly |
| Luksika Kumkhum | THA |
TEN | YOG | 2010 | 0–2–0 2015 Gwangju TEN silver: singles and team |
| Yury Kunakov | RUS |
DIV | Olympics | 2008 | 0–1–0 2013 Kazan DIV silver: team |