Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Alessandro Attene | ATH | Olympics | 2000 | 0–0–1 1999 Palma de Mallorca ATH bronze: 4×100 m relay | |
| Susie Atwood | SWM | Olympics | 1968—1972 | 1–0–0 1973 Moskva SWI gold: 200 m medley | |
| Stephanie Au | SWM | Olympics / Opening Flagbearer | 2008—2024 | 0–1–0 2015 Gwangju SWI silver: 50 m backstroke | |
| Doris Auer | ATH | Olympics | 2000 | 0–0–1 1997 Catania ATH bronze: pole vault | |
| Axel Augis | GAR | Olympics | 2016 | 1–0–0 2017 Taipei GYM gold: horizontal bar | |
| Stacey Augmon | BKB | Olympics | 1988 | 1–0–0 1989 Duisburg BAS gold | |
| Jéssica Augusto | ATH | Olympics | 2008—2016 | 1–0–0 2007 Bangkok ATH gold: 5000 m | |
| Seimone Augustus | BKB | Olympics | 2008—2016 | 1–0–0 2005 İzmir BAS gold | |
| Apti Aukhadov | WLF | Olympics | 2012 | 1–0–0 2013 Kazan WLT gold: light-heavyweight -85 kg | |
| Bastien Auzeil | ATH | Olympics | 2016 | 0–1–0 2015 Gwangju ATH silver: decathlon | |
| Fatih Avan | ATH | Olympics | 2012 | 1–0–1 2011 Shenzhen ATH gold: javelin throw; 2013 Kazan ATH bronze: javelin throw | |
| Vule Avdalović | BKB | Olympics | 2004 | 1–0–0 2001 Beijing BAS gold (competed for FR Yugoslavia) | |
| Liudmyla Avdieienko | ATH | Olympics | 1988 | 0–1–0 1985 Kobe ATH silver: high jump (competed as Liudmyla Petrus) | |
| Gianni Averaimo | WPO | Olympics / Non-starter | 1988—1992 | 1–0–0 1987 Zagreb WAP gold | |
| Alex Averbukh | ATH | Olympics | 2000—2008 | 1–0–0 2001 Beijing ATH gold: pole vault | |
| Nikolay Avilov | ATH | Olympics | 1968—1976 | 1–1–0 1970 Torino ATH gold: decathlon; 1973 Moskva ATH silver: decathlon | |
| Roman Avramenko | ATH | Olympics | 2008—2012 | 0–1–0 2011 Shenzhen ATH silver: javelin throw | |
| Esma Aydemir | ATH | Olympics | 2016 | 0–2–0 2017 Taipei ATH silver: half marathon and half marathon team | |
| Merve Aydın | ATH | Olympics | 2008—2012 | 0–1–0 2011 Shenzhen ATH silver: 4×400 m relay | |
| Süreyya Ayhan | ATH | Olympics | 2000 | 1–0–0 2001 Beijing ATH gold: 1500 m | |
| Gulnafis Aytmukhambetova | TKW | Olympics | 2012 | 1–0–0 2009 Beograd TKW gold: welterweight -67 kg | |
| Tatyana Azarova | ATH | Olympics | 2008—2012 | 1–0–0 2007 Bangkok ATH gold: 400 m hurdles | |
| Karina Aznavuryan | FEN | Olympics | 1996—2004 | 0–2–0 1997 Catania FEN silver: épée and épée team | |
| Sandra Azón | SAL | Olympics | 2000—2008 | 1–0–0 1999 Palma de Mallorca SAI gold: 470 women | |
| Marina Azyabina | ATH | Olympics | 1992 | 1–0–0 1991 Sheffield ATH gold: 100 m hurdles (competed for the Soviet Union) | |
| Gülbadam Babamyradowa | JUD | Olympics / Opening Flagbearer | 2016—2020 | 1–0–1 2013 Kazan belt wrestling gold: freestyle -52 kg, Sambo bronze: -52 kg | |
| Svetlana Babanina | SWM | Olympics | 1964—1968 | 1–0–2 1965 Budapest SWI gold: 200 m breaststroke, bronze: 100 m freestyle and 4×100 m freestyle relay | |
| Nazim Babayev | ATH | Olympics / YOG | 2014—2020 | 2–0–0 2017 Taipei ATH gold: triple jump; 2019 Napoli ATH gold: triple jump | |
| Alonzo Babers | ATH | Olympics | 1984 | 1–0–0 1983 Edmonton ATH gold: 4×400 m relay | |
| Féthi Baccouche | ATH | Olympics / Opening Flagbearer | 1984—1988 | 0–1–1 1983 Edmonton ATH silver: 5000 m, bronze: 10000 m | |
| Harold Backer | ROW | Olympics | 1984—1992 | 0–0–1 1987 Zagreb ROW bronze: coxed fours | |
| Ron Backes | ATH | Olympics | 1992 | 0–0–1 1987 Zagreb ATH bronze: shot put | |
| Steve Backley | ATH | Olympics | 1992—2004 | 2–0–0 1989 Duisburg gold: javelin throw; 1991 Sheffield ATH gold: javelin throw | |
| Rose-Aimée Bacoul | ATH | Olympics / Non-starter | 1980—1984 | 0–0–1 1975 Roma ATH bronze: 4×100 m relay | |
| Andy Baddeley | ATH | Olympics | 2008—2012 | 0–1–0 2005 İzmir ATH silver: 1500 m | |
| Ndiss Kaba Badji | ATH | Olympics | 2004—2012 | 0–1–0 2009 Beograd ATH silver: long jump | |
| Stephan Baeck | BKB | Olympics | 1992 | 0–0–1 1989 Duisburg BAS bronze (competed for West Germany) | |
| Baek Lee-Seul | HOC | Olympics / YOG | 2010—2016 | 1–0–0 2013 Kazan HOK gold | |
| Armen Bagdasarov | JUD | Olympics | 1996—2000 | 0–1–0 1999 Palma de Mallorca JUD silver: middleweight -90 kg | |
| Mohammad Bagheri Motamed | TKW | Olympics | 2012 | 1–1–0 2005 İzmir TKW silver: bantamweight -62 kg; 2007 Bangkok TKW gold: featherweight -67 kg | |
| Nikolay Bagley | BKB | Olympics | 1964 | 2–0–0 1959 Torino BAS gold; 1961 Sofia BAS gold | |
| István Bagyula | ATH | Olympics | 1988—1992 | 3–0–0 1991 Sheffield ATH gold: pole vault; 1993 Buffalo ATH gold: pole vault; 1995 Fukuoka ATH gold: pole vault | |
| Andrei Bahdanovich | CSP | Olympics | 2008—2012 | 0–1–1 2013 Kazan CAN silver: C4 200 m, bronze: C1 500 m | |
| Dave Bailey | ATH | Olympics | 1968 | 0–1–0 1967 Tokyo ATH silver: 1500 m | |
| Sarah Bainbridge | TKW | Olympics | 2004 | 0–0–1 2003 Daegu TKW bronze: welterweight -67 kg | |
| RaNae Bair | ATH | Olympics | 1964—1968 | 1–0–0 1967 Tokyo ATH gold: javelin throw | |
| Cameron Bairstow | BKB | Olympics | 2016 | 0–1–0 2013 Kazan BAS silver | |
| Balázs Baji | ATH | Olympics | 2012—2016 | 1–0–0 2017 Taipei ATH gold: 110 m hurdles | |
| József Bakai | ATH | Olympics | 1972 | 0–1–0 1965 Budapest ATH silver: decathlon | |
| Airat Bakare | ATH | Olympics | 1988 | 0–0–1 1987 Zagreb ATH bronze: 4×400 m relay | |
| Yury Bakarinov | ATH | Olympics | 1964 | 0–0–1 1965 Budapest ATH bronze: hammer throw | |
| Yuliya Bakhareva-Lichagina | FEN | Olympics / YOG | 2010—2020 | 0–1–1 2015 Gwangju FEN silver: épée team, bronze: épée | |
| Yekaterina Bakhvalova | ATH | Olympics | 2004 | 1–1–0 1997 Catania ATH gold: 4×400 m relay, silver: 400 m hurdles | |
| Mariya Baklakova | SWM | Olympics | 2012 | 1–1–2 2017 Taipei SWI gold: 4×200 m freestyle relay, silver: 4×100 m freestyle relay (swam in heats only); 2019 Napoli SWI bronze: 200 m freestyle and 4×200 m freestyle relay | |
| Péter Bakonyi | FEN | Olympics | 1964—1972 | 4–2–0 1961 Sofia FEN gold: sabre and sabre team; 1963 Porto Alegre FEN gold: sabre team, silver: sabre; 1965 Budapest FEN gold: sabre team, silver: sabre | |
| György Bakos | ATH | Olympics | 1988 | 0–1–0 1985 Kobe silver: 110 m hurdles | |
| Béla Bakosi | ATH | Olympics / Non-starter | 1980—1988 | 0–1–0 1981 București ATH silver: triple jump | |
| Barbara Bakulin | ATH | Olympics / Non-starter | 1972—1976 | 0–2–0 1973 Moskva ATH silver: 4×100 m relay; 1975 Roma ATH silver: 4×100 m relay | |
| Sergey Bakulin | ATH | Olympics | 2012 | 1–0–0 2009 Beograd ATH gold: 20 km walk | |
| Anișoara Bălan-Dobre | ROW | Olympics | 1988—1992 | 1–0–0 1987 Zagreb ROW gold: quadruple sculls (competed as Anișoara Bălan) | |
| Aleksandr Balandin | GAR | Olympics | 2012 | 1–1–0 2009 Beograd GYM gold: rings, silver: team | |
| Dmitry Balandin | SWM | Olympics | 2016—2020 | 1–1–2 2015 Gwangju SWI gold: 100 m breaststroke, bronze: 50 m breaststroke; 2017 Taipei SWI silver: 200 m breaststroke, bronze: 100 m breaststroke | |
| Iolanda Balaș | ATH | Olympics | 1956—1964 | 2–0–0 1959 Torino ATH gold: high jump; 1961 Sofia ATH gold: high jump | |
| Ester Balassini | ATH | Olympics | 2000—2004 | 0–0–1 2005 İzmir ATH bronze: hammer throw | |
| Eglė Balčiūnaitė | ATH | Olympics | 2008—2016 | 0–0–1 2013 Kazan ATH bronze: 800 m | |
| Andrea Baldini | FEN | Olympics | 2012—2016 | 1–1–0 2005 İzmir FEN gold: foil, silver: foil team | |
| Sean Baldock | ATH | Olympics | 2000—2004 | 0–0–1 1997 Catania ATH bronze: 4×400 m relay | |
| Brita Baldus | DIV | Olympics | 1988—1992 | 1–2–2 1987 Zagreb DIV bronze: 3 m springboard (competed for East Germany); 1991 Sheffield DIV silver: 1 m springboard and 3 m springboard (competed for Germany); 1993 Buffalo DIV gold: 3 m springboard, bronze: 1 m springboard (competed for Germany) | |
| Patrick van Balkom | ATH | Olympics | 2004 | 0–1–0 1999 Palma de Mallorca ATH silver: 200 m | |
| Lloy Ball | VVO | Olympics | 1996—2008 | 0–1–0 1991 Sheffield VOL silver | |
| Mária Balla-Lantos | SWM | Olympics | 1964—1968 | 3–0–0 1963 Porto Alegre SWI gold: 100 m backstroke, 4×100 m freestyle relay, and 4×100 m medley relay (competed as Mária Balla) | |
| Valentina Ballod | ATH | Olympics | 1956—1960 | 0–1–0 1959 Torino ATH silver: high jump | |
| Coralie Balmy | SWM | Olympics | 2008—2016 | 0–1–0 2007 Bangkok SWI silver: 400 m freestyle | |
| Györgyi Balogh-Szomov | ATH | Olympics | 1968—1972 | 0–2–1 1970 Torino ATH silver: 200 m and 4×100 m relay, bronze: 100 m (competed as Györgyi Balogh) | |
| Halina Balon | FEN | Olympics | 1968—1972 | 0–0–1 1973 Moskva FEN bronze: foil team | |
| Stoyan Balov | WRE | Olympics | 1988 | 0–0–1 1981 București WRE bronze: Greco-Roman bantamweight -57 kg | |
| Ramona Balthasar | ROW | Olympics | 1988 | 0–0–1 1987 Zagreb ROW bronze: quadruple sculls | |
| Viktor Baluda | TEN | YOG | 2010 | 0–1–1 2013 Kazan TEN silver: doubles, bronze: team | |
| Ágnes Bánfai | GAR | Olympics | 1968 | 0–0–2 1970 Torino GYM bronze: team; 1973 Moskva GYM bronze: team | |
| Bang Dae-Du | WRE | Olympics | 1984 | 0–0–1 1981 București WRE bronze: Greco-Roman flyweight -52 kg | |
| Bang Gwi-Man | JUD | Olympics | 2004 | 1–0–0 2003 Daegu JUD gold: team | |
| Witold Bańka | Administrator | 2020 | 1–1–0 2007 Bangkok ATH gold: 4×400 m relay; 2009 Beograd ATH silver: 4×400 m relay | ||
| Willie Banks | ATH | Olympics | 1984—1988 | 1–0–1 1977 Sofia ATH bronze: triple jump; 1979 Ciudad de México ATH gold: triple jump | |
| Marko Banović | ROW | Olympics | 1992—1996 | 0–0–1 1987 Zagreb ROW bronze: quadruple sculls (competed for Yugoslavia) | |
| Ivan Banzeruk | ATH | Olympics | 2016—2024 | 1–0–1 2015 Gwangju ATH gold: 20 km walk team; 2017 Taipei ATH bronze: 20 km walk team | |
| Bao Yingying | FEN | Olympics | 2008 | 1–2–2 2001 Beijing FEN silver: sabre team, bronze: sabre; 2003 Daegu FEN gold: sabre team, bronze: sabre; 2009 Beograd FEN silver: sabre | |
| Andrei Barabaș | ATH | Olympics | 1960—1964 | 0–1–0 1961 Sofia ATH silver: 5000 m | |
| Silvio Baracchini | WPO | Olympics | 1972—1976 | 0–1–0 1970 Torino WAP silver | |
| Costică Bărăgan | FEN | Olympics | 1972—1980 | 1–0–0 1977 Sofia FEN gold: épée team | |
| Darren Barber | ROW | Olympics | 1992—1996 | 1–1–0 1993 Buffalo ROW gold: coxless pairs, silver: quadruple sculls | |
| Arianna Barbieri | SWM | Olympics | 2012 | 1–0–0 2015 Gwangju SWI gold: 4×100 m medley relay (swam in heats only) | |
| Erica Barbieri | JUD | Olympics | 2012 | 0–0–1 2007 Bangkok JUD bronze: middleweight -70 kg | |
| Nicolae Bărbuță | VVO | Olympics | 1964 | 0–1–0 1959 Torino VOL silver | |
| Philippe Barca-Cysique | VVO | Olympics | 2004 | 0–1–0 2001 Beijing VOL silver | |
| Olesya Barel | BKB | Olympics | 1988 | 2–0–0 1981 București BAS gold; 1985 Kobe BAS gold | |
| Paval Bareysha | ATH | Olympics | 2016 | 0–2–0 2015 Gwangju ATH silver: hammer throw; 2017 Taipei ATH silver: hammer throw | |
| Mikhail Bariban | ATH | Olympics | 1972 | 1–0–0 1973 Moskva ATH gold: triple jump | |
| Antonino Barillà | SHO | Olympics | 2016 | 1–1–1 2011 Shenzhen SHO bronze: double trap team; 2013 Kazan SHO gold: double trap, silver: double trap team | |
| Charles Barkley | BKB | Olympics | 1992—1996 | 0–0–1 1983 Edmonton BAS bronze | |
| Sylvia Barlag | ATH | Olympics | 1980 | 0–1–0 1979 Ciudad de México ATH silver: pentathlon | |
| Valérie Barlois-Mevel-Leroux | FEN | Olympics | 1996—2000 | 0–1–1 1991 Sheffield FEN bronze: épée team (competed as Valérie Barlois); 1993 Buffalo FEN silver: épée team (competed as Valérie Barlois) | |
| Guy Barnea | SWM | Olympics | 2008 | 0–1–1 2009 Beograd SWI bronze: 50 m backstroke; 2011 Shenzhen SWI silver: 50 m backstroke | |
| Kirsten Barnes | ROW | Olympics | 1988—1992 | 0–1–0 1989 Duisburg ROW silver: coxless fours | |
| Christine Barnetson | SWM | Olympics | 1964 | 0–0–1 1967 Tokyo SWI bronze: 100 m breaststroke | |
| Romain Barnier | SWM | Olympics | 2000—2004 | 1–1–4 1997 Catania SWI silver: 4×200 m freestyle relay, bronze: 4×100 m freestyle relay; 2001 Beijing SWI gold: 100 m freestyle, bronze: 4×100 m freestyle relay, 4×200 m freestyle relay, and 4×100 m medley relay | |
| Thomas Barr | ATH | Olympics | 2016—2024 | 1–0–0 2015 Gwangju ATH gold: 400 m hurdles | |
| Guy Barrabino | FEN | Olympics | 1960 | 1–0–1 1959 Torino FEN gold: foil, bronze: foil team | |
| Gérard Barras | ATH | Olympics | 1960 | 0–1–0 1961 Sofia ATH silver: pole vault | |
| Romain Barras | ATH | Olympics | 2004—2008 | 1–0–0 2003 Daegu ATH gold: decathlon | |
| Pascal Barré | ATH | Olympics | 1980 | 0–0–1 1979 Ciudad de México ATH bronze: 4×100 m relay | |
| Juan Carlos Barreras | WPO | Olympics | 1992 | 0–1–0 1987 Zagreb WAP silver | |
| Brigetta Barrett | ATH | Olympics | 2012 | 1–0–0 2011 Shenzhen ATH gold: high jump | |
| Rowan Barrett, Sr. | BKB | Olympics | 2000 | 0–1–1 1993 Buffalo BAS silver; 1995 Fukuoka BAS bronze | |
| Yarelis Barrios | ATH | Olympics | 2008—2012 | 1–0–0 2007 Bangkok ATH gold: discus throw | |
| Jaime Barroso | ATH | Olympics | 1992—1996 | 0–1–0 1991 Sheffield ATH silver: 20 km | |
| Tatyana Barsuk | SHO | Olympics | 2016 | 0–1–0 2013 Kazan SHO silver: trap team | |
| Danka Barteková | SHO | Olympics / Administrator / Opening Flagbearer / Closing Flagbearer | 2008—2024 | 0–1–0 2011 Shenzhen SHO silver: skeet | |
| Leonid Bartenev | ATH | Olympics | 1956—1960 | 1–0–0 1961 Sofia ATH gold: 4×100 m relay | |
| Magdalena Bartoș | FEN | Olympics | 1976 | 1–1–0 1973 Moskva FEN gold: foil team; 1977 Sofia FEN silver: foil team (competed as Magdalena Chezan) | |
| Olga Barysheva-Korostelyova | BKB | Olympics | 1976—1980 | 2–0–0 1977 Sofia BAS gold (competed as Olga Barysheva); 1981 București BAS gold (competed as Olga Korostelyova) | |
| Aleksandr Baryshnikov | ATH | Olympics | 1972—1980 | 0–0–1 1973 Moskva ATH bronze: shot put | |
| Anna Basalkina | SAL | Olympics | 2000 | 0–1–0 1999 Palma de Mallorca SAI silver: 470 women | |
| Alibek Bashkayev | JUD | Olympics | 2008 | 0–1–0 2009 Beograd JUD silver: team | |
| Leonardo Basile | TKW | Olympics | 2008 | 0–1–1 2005 İzmir TKW bronze: heavyweight +84 kg; 2007 Bangkok TKW silver: heavyweight +84 kg | |
| Cristian Ioan Bățagă | GAR | Olympics | 2012 | 0–0–1 2011 Shenzhen GYM bronze: team | |
| Matthieu Bataille | JUD | Olympics / Referee | 2004—2024 | 0–0–1 2001 Beijing JUD bronze: team | |
| Michael Bates | ATH | Olympics | 1992 | 2–0–0 1991 Sheffield ATH gold: 100 m and 4×100 m relay | |
| Noemi Batki | DIV | Olympics | 2008—2020 | 1–0–0 2007 Bangkok DIV gold: 1 m springboard | |
| Magali Baton | JUD | Olympics | 1996 | 0–1–1 1995 Fukuoka JUD silver: team, bronze: lightweight -56 kg | |
| Stefano Battistelli | SWM | Olympics | 1988—1992 | 0–0–1 1997 Catania SWI bronze: 400 m medley | |
| Sabine Bau | FEN | Olympics | 1988—2000 | 1–2–0 1989 Duisburg FEN silver: foil team (competed for West Germany); 1993 Buffalo FEN silver: foil team (competed for Germany); 1995 Fukuoka FEN gold: foil team (competed for Germany) | |
| Stefano Baudino | CTR | Olympics | 1984 | 0–1–0 1983 Edmonton CYC silver: 1000 m time trial | |
| Simone Bauer | FEN | Olympics | 2004 | 1–0–0 1995 Fukuoka FEN gold: foil team | |
| Alex Baumann | SWM | Olympics / Opening Flagbearer | 1984 | 2–1–3 1983 Edmonton SWI gold: 200 m medley and 400 m medley, silver: 4×100 m medley relay, bronze: 200 m freestyle, 4×100 m freestyle relay, and 4×200 m freestyle relay | |
| Iga Baumgart-Witan | ATH | Olympics | 2012—2020 | 1–0–0 2017 Taipei ATH gold: 4×400 m relay | |
| Bruce Baumgartner | WRE | Olympics / Opening Flagbearer | 1984—1996 | 1–0–0 1981 București WRE gold: freestyle super-heavyweight +100 kg | |
| Hans Baumgartner | ATH | Olympics | 1972—1976 | 0–0–1 1973 Moskva ATH bronze: long jump | |
| Simona Baumrtová-Kubová | SWM | Olympics | 2012—2020 | 0–1–0 2015 Gwangju SWI silver: 200 m backstroke | |
| Karolis Bauža | JUD | Olympics | 2012 | 0–0–2 2007 Bangkok JUD bronze: middleweight -90 kg; 2015 Gwangju JUD bronze: open class | |
| Bayaraagiin Naranbaatar | WRE | Olympics | 2004—2012 | 1–0–0 2005 İzmir WRE gold: freestyle featherweight -55 kg | |
| Sergey Bazarevich | BKB | Olympics | 1992—2000 | 1–0–0 1985 Kobe BAS gold | |
| Viktor Bazhenov | FEN | Olympics / Referee | 1972—2000 | 2–0–0 1970 Torino FEN gold: sabre team; 1973 Moskva FEN gold: sabre team | |
| Nadezhda Bazhina | DIV | Olympics | 2012—2016 | 0–0–1 2007 Bangkok DIV bronze: team | |
| Michael Bazynski | JUD | Olympics | 1988 | 0–0–1 1985 Kobe JUD bronze: middleweight -86 kg | |
| Amanda Beard | SWM | Olympics | 1996—2008 | 0–2–0 1999 Palma de Mallorca SWI silver: 100 m breaststroke and 4×100 m medley relay (swam in heats only) | |
| Glenn Beauchamp | JUD | Olympics | 1984—1988 | 0–1–0 1985 Kobe JUD silver: half-middleweight -78 kg | |
| Marie-Ève Beauchemin-Nadeau | WLF | Olympics | 2012—2016 | 0–0–2 2011 Shenzhen WLT bronze: light-heavyweight -69 kg; 2013 Kazan WLT bronze: middle-heavyweight -75 kg | |
| Keith Beavers | SWM | Olympics | 2004—2008 | 0–1–1 2009 Beograd SWI silver: 200 m medley, bronze: 4×200 m freestyle relay | |
| Andrea Beccari | SWM | Olympics | 2000—2004 | 1–1–2 1999 Palma de Mallorca SWI silver: 4×100 m freestyle relay, bronze: 4×200 m freestyle relay; 2001 Beijing SWI gold: 4×200 m freestyle relay; 2003 Daegu SWI bronze: 4×200 m freestyle relay | |
| Felix Becker | FEN | Olympics | 1988—1996 | 1–0–0 1991 Sheffield FEN gold: sabre team (competed for Germany) | |
| James Beckford | ATH | Olympics | 1996—2004 | 0–1–0 1997 Catania ATH silver: long jump | |
| Gudrun Beckmann | SWM | Olympics | 1972—1976 | 0–1–0 1977 Sofia SWI silver: 100 m butterfly | |
| Jana Beckmann | SHO | Olympics | 2016 | 1–0–0 2011 Shenzhen SHO gold: trap | |
| B. J. Bedford | SWM | Olympics | 2000 | 4–0–0 1991 Sheffield SWI gold: 100 m backstroke and 4×100 m medley relay; 1993 Buffalo SWI gold: 100 m backstroke and 4×100 m medley relay | |
| Gunther Behnke | BKB | Olympics | 1992 | 0–0–1 1989 Duisburg BAS bronze (competed for West Germany) | |
| Reinhold Behr | FEN | Olympics | 1972—1976 | 1–0–0 1970 Torino FEN gold: épée team | |
| Hartmuth Behrens | FEN | Olympics | 1980 | 0–0–1 1979 Ciudad de México FEN bronze: foil team | |
| Rolf Beilschmidt | ATH | Olympics | 1976 | 0–1–0 1979 Ciudad de México ATH silver: high jump | |
| Monika Bejnar | ATH | Olympics | 2004—2008 | 0–1–0 2005 İzmir ATH silver: 4×400 m relay | |
| Ilona Békési | GAR | Olympics | 1968—1972 | 0–0–1 1973 Moskva GYM bronze: team | |
| Maryna Bekh-Romanchuk | ATH | Olympics | 2016—2024 | 1–0–0 2019 Napoli ATH gold: long jump | |
| Zhan Beleniuk | WRE | Olympics | 2016—2024 | 0–0–1 2013 Kazan WRE bronze: Greco-Roman light-heavyweight -84 kg | |
| Lyndsay Belisle | WRE | Olympics | 2004 | 0–1–0 2005 İzmir WRE silver: freestyle featherweight -51 kg | |
| Semyon Belits-Geyman | SWM | Olympics | 1964—1968 | 1–3–0 1965 Budapest SWI gold: 400 m freestyle, silver: 1500 m freestyle, 4×100 m freestyle relay, and 4×200 m freestyle relay | |
| Paul Belk | SWM | Olympics | 2000 | 1–0–0 2001 Beijing SWI gold: 4×100 m freestyle relay | |
| Katie Bell | DIV | Olympics | 2012 | 0–1–0 2011 Shenzhen DIV silver: team | |
| Kenta Bell | ATH | Olympics | 2004—2008 | 1–0–0 2001 Beijing ATH gold: triple jump | |
| Hicham Bellani | ATH | Olympics | 2004 | 0–0–1 2003 Daegu ATH bronze: 5000 m | |
| Sergio Bello | ATH | Olympics | 1964—1972 | 2–0–2 1963 Porto Alegre ATH bronze: 4×400 m relay; 1965 Budapest ATH gold: 400 m and 4×400 m relay; 1967 Tokyo ATH bronze: 400 m | |
| Stefano Bellone | FEN | Olympics | 1980—1988 | 2–1–1 1977 Sofia FEN bronze: foil team; 1979 Ciudad de México FEN silver: foil team; 1983 Edmonton FEN gold: épée and épée team | |
| Wilhem Belocian | ATH | Olympics | 2016—2024 | 0–1–0 2019 Napoli ATH silver: 110 m hurdles | |
| Anatoly Beloglazov | WRE | Olympics | 1980 | 1–0–0 1981 București WRE gold: freestyle bantamweight -57 kg | |
| Aleksandr Belostenny | BKB | Olympics | 1980—1992 | 1–1–0 1981 București BAS silver (competed for the Soviet Union); 1985 Kobe BAS gold (competed for the Soviet Union) | |
| Marco Belotti | SWM | Olympics | 2008—2016 | 0–0–1 2015 Gwangju SWI bronze: 100 m freestyle | |
| Aleksandr Belov | BKB | Olympics | 1972—1976 | 1–1–0 1970 Torino BAS gold; 1973 Moskva BAS silver | |
| Sergey Belov | BKB | Olympics / Other / Torch Bearer | 1968—1994 | 1–0–0 1970 Torino BAS gold | |
| Olga Belova-Gorbunova | WPO | Olympics | 2012—2016 | 0–0–1 2011 Shenzhen WAP bronze | |
| Janine Belton | SWM | Olympics | 1996—2000 | 0–0–1 1999 Palma de Mallorca SWI bronze: 4×200 m freestyle relay | |
| Daima Beltrán | JUD | Olympics | 2000—2004 | 1–0–3 1995 Fukuoka JUD gold: heavyweight +72 kg, bronze: team; 1999 Palma de Mallorca JUD bronze: heavyweight +78 kg and open class | |
| Ileana Beltrán | JUD | Olympics | 1992—1996 | 0–0–2 1995 Fukuoka JUD bronze: half-middleweight -61 kg and team | |
| Darya Belyakina | SWM | Olympics | 2008—2012 | 1–1–0 2013 Kazan SWI gold: 4×100 m freestyle relay, silver: 4×200 m freestyle relay | |
| Yevgeniya Belyakova | BKB | Olympics | 2012 | 0–2–0 2007 Bangkok BAS silver; 2009 Beograd BAS silver | |
| David Belyavsky | GAR | Olympics | 2012—2020 | 1–1–2 2013 Kazan GYM gold: team, silver: parallel bars, bronze: all-around and floor | |
| Olga Belyayeva | WPO | Olympics | 2008—2012 | 1–0–0 2013 Kazan WAP gold | |
| Christian Belz | ATH | Olympics | 2000—2004 | 0–0–2 2001 Beijing ATH bronze: 5000 m and 3000 m steeplechase | |
| Lahlou Ben Younès | ATH | Olympics | 1992—1996 | 0–1–0 1991 Sheffield ATH silver: 400 m | |
| Óscar Benalcázar | BKB | Olympics | 1964 | 0–0–1 1963 Porto Alegre BAS bronze | |
| Virgen Benavides | ATH | Olympics | 2004—2008 | 0–0–1 1999 Palma de Mallorca ATH bronze: 100 m | |
| Júlia Bendeová | VVO | Olympics | 1968 | 0–0–1 1965 Budapest VOL bronze | |
| Luigi Benedetti | ATH | Olympics | 1972—1976 | 0–0–1 1973 Moskva ATH bronze: 4×100 m relay | |
| Ainsley Bennett | ATH | Olympics | 1976 | 0–0–2 1979 Ciudad de México ATH bronze: 100 m and 200 m | |
| Craig Benson | SWM | Olympics | 2012—2016 | 0–0–2 2015 Gwangju SWI bronze: 100 m breaststroke and 200 m breaststroke | |
| Neisser Bent | SWM | Olympics | 1996—2000 | 1–1–0 1997 Catania SWI gold: 100 m backstroke, silver: 200 m backstroke | |
| Conny van Bentum | SWM | Olympics | 1980—1988 | 3–4–4 1985 Kobe SWI gold: 100 m freestyle and 200 m freestyle, silver: 4×100 m freestyle relay, bronze: 100 m butterfly and 4×100 m medley relay; 1987 Zagreb SWI gold: 4×100 m freestyle relay, silver: 100 m freestyle, 100 m butterfly, and 4×200 m freestyle relay, bronze: 50 m freestyle and 4×100 m medley relay | |
| Marius Daniel Berbecar | GAR | Olympics | 2012 | 0–1–1 2011 Shenzhen GYM silver: parallel bars, bronze: team | |
| Lalka Berberova | ROW | Olympics | 1988—1992 | 0–1–0 1987 Zagreb ROW silver: quadruple sculls | |
| Gheorghe Berceanu | WRE | Olympics / Non-starter | 1968—1976 | 1–0–0 1973 Moskva WRE gold: Greco-Roman light-flyweight -48 kg | |
| Brigitte Berendonk | ATH | Olympics | 1968—1972 | 0–2–1 1967 Tokyo ATH silver: discus throw, bronze: shot put; 1970 Torino ATH silver: discus throw | |
| Oleksandr Beresh | GAR | Olympics | 2000 | 1–0–0 1999 Palma de Mallorca GYM gold: all-around | |
| Olha Beresnieva | OWS/SWM | Olympics | 2000—2012 | 0–0–1 2003 Daegu SWI bronze: 800 m freestyle |