Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Tetiana Berezhna | ARC | Olympics | 2004—2008 | 0–1–1 2003 Daegu ARC bronze: recurve team; 2005 İzmir ARC silver: recurve team | |
| Larisa Bergen | VVO | Olympics | 1976 | 2–0–0 1973 Moskva VOL gold; 1977 Sofia VOL gold | |
| Denys Berinchyk | BOX | Olympics | 2012 | 0–0–1 2013 Kazan BOX bronze: light-welterweight -64 kg | |
| Krisztián Berki | GAR | Olympics | 2012 | 1–0–0 2009 Beograd GYM gold: pommelled horse | |
| Dave Berkoff | SWM | Olympics | 1988—1992 | 1–1–0 1987 Zagreb SWI gold: 4×100 m medley relay, silver: 100 m backstroke | |
| Andrea Bermond Des Ambrois | FEN | Olympics | 1988 | 2–0–1 1985 Kobe FEN bronze: épée team; 1987 Zagreb FEN gold: épée and épée team | |
| Yanet Bermoy | JUD | Olympics | 2008—2012 | 0–1–1 2009 Beograd JUD bronze: half-lightweight -52 kg; 2013 Kazan JUD silver: half-lightweight -52 kg | |
| Alain Bernard | SWM | Olympics / Torch Bearer | 2008—2024 | 1–0–0 2005 İzmir SWI gold: 4×100 m freestyle relay | |
| Martyn Bernard | ATH | Olympics | 2008 | 0–0–1 2005 İzmir ATH bronze: high jump | |
| Sylvie Bernier | DIV | Olympics | 1984 | 0–0–1 1983 Edmonton DIV bronze: 3 m springboard | |
| Gilles Berolatti | FEN | Olympics | 1968—1972 | 1–0–1 1965 Budapest FEN gold: foil team; 1967 Tokyo FEN bronze: foil team | |
| Rachid Berradi | ATH | Olympics | 2000 | 0–0–1 1997 Catania ATH bronze: 10000 m | |
| Livio Berruti | ATH | Olympics | 1960—1968 | 4–0–2 1959 Torino ATH gold: 100 m, 200 m, and 4×100 m relay; 1963 Porto Alegre ATH bronze: 100 m and 200 m; 1967 Tokyo ATH gold: 4×100 m relay | |
| Paula Berry | ATH | Olympics | 1992 | 0–0–1 1991 Sheffield ATH bronze: javelin throw | |
| Marcello Bertinetti | FEN | Olympics | 1976 | 0–0–1 1973 Moskva FEN bronze: épée team | |
| Franco Bertini | BKB | Olympics | 1964 | 0–1–0 1959 Torino BAS silver | |
| Gilles Bertould | ATH | Olympics | 1968—1972 | 0–0–1 1970 Torino ATH bronze: 4×400 m relay | |
| Ryan Berube | SWM | Olympics | 1996 | 1–0–0 1993 Buffalo SWI gold: 4×200 m freestyle relay | |
| Nadezhda Besfamilnaya | ATH | Olympics | 1972—1976 | 1–0–0 1973 Moskva ATH gold: 4×100 m relay | |
| Doina Beșliu-Melinte | ATH | Olympics | 1980—1992 | 1–2–1 1981 București ATH gold: 800 m, silver: 1500 m (competed as Doina Melinte); 1983 Edmonton ATH silver: 1500 m, bronze: 800 m (competed as Doina Melinte) | |
| Irina Bespalova | SWM | Olympics | 2008—2012 | 1–2–2 2001 Beijing SWI gold: 100 m butterfly; 2003 Daegu SWI silver: 50 m butterfly, bronze: 100 m butterfly; 2005 İzmir SWI bronze: 4×100 m medley relay; 2007 Bangkok SWI silver: 100 m butterfly | |
| Guillermo Betancourt | FEN | Olympics | 1980—1992 | 2–0–1 1981 București FEN bronze: foil team; 1987 Zagreb FEN gold: foil team; 1989 Duisburg FEN gold: foil team | |
| Jorge Betancourt | DIV | Olympics | 2004—2008 | 0–1–0 2005 İzmir DIV silver: synchronized springboard | |
| Lázaro Betancourt | ATH | Olympics | 1964 | 0–1–0 1963 Porto Alegre ATH silver: 4×100 m relay | |
| Udo Beyer | ATH | Olympics | 1976—1992 | 1–0–0 1979 Ciudad de México ATH gold: shot put (competed for East Germany) | |
| Uwe Beyer | ATH | Olympics | 1964—1972 | 0–0–1 1973 Moskva ATH bronze: hammer throw (competed for West Germany) | |
| Milad Beygi | TKW | Olympics | 2016—2020 | 1–0–0 2017 Taipei TKW gold: welterweight -80 kg | |
| Hanna Bezsonova | GRY | Olympics | 2004—2008 | 10–8–1 2003 Daegu RGY gold: ribbon, silver: individual, ball, clubs, and hoop; 2005 İzmir RGY gold: individual, ball, clubs, and rope, bronze: ribbon; 2007 Bangkok RGY gold: individual, clubs, hoop, ribbon, and rope; 2009 Beograd RGY silver: individual, ball, ribbon, and rope | |
| Manuela Bezzola | TKW | Olympics | 2008 | 1–0–0 2009 Beograd TKW gold: flyweight -51 kg | |
| Patimat Bəhəmmədova | WRE | YOG | 2010 | 0–1–0 2013 Kazan WRE silver: freestyle flyweight -48 kg | |
| Bi Wenjing | GAR | Olympics | 1996 | 0–0–2 1999 Palma de Mallorca GYM bronze: balance beam and team | |
| Bi Yan | FBL | Olympics | 2004—2008 | 1–0–0 2011 Shenzhen FTB gold | |
| Yauhen Biadulin | JUD | Olympics | 2012 | 0–0–1 2009 Beograd JUD bronze: half-heavyweight -100 kg | |
| Małgorzata Białecka | SAL | Olympics | 2016 | 0–0–1 2011 Shenzhen SAI bronze: RS:X | |
| Diana Bianchedi | FEN | Olympics | 1992—2000 | 4–0–1 1989 Duisburg FEN gold: foil and foil team; 1991 Sheffield FEN gold: foil team; 1993 Buffalo FEN gold: foil team, bronze: foil | |
| Bruno Bianchi | ATH | Olympics / Non-starter | 1964—1968 | 1–0–0 1965 Budapest ATH gold: 4×400 m relay | |
| Bruno Bianchi | SWM | Olympics | 1960—1964 | 0–1–1 1963 Porto Alegre SWI silver: 4×100 m medley relay, bronze: 4×100 m freestyle relay | |
| Guillaume Bianchi | FEN | Olympics / YOG | 2014—2024 | 1–1–1 2017 Taipei FEN bronze: foil team; 2019 Napoli gold: foil team, silver: foil | |
| Ilaria Bianco | FEN | Olympics | 2008—2016 | 1–0–1 2001 Beijing FEN gold: sabre, bronze: sabre team | |
| Bence Biczó | SWM | Olympics / YOG | 2010—2012 | 1–0–1 2013 Kazan SWI gold: 200 m butterfly; 2017 Taipei SWI bronze: 200 m butterfly | |
| Klaus Bieler | ATH | Olympics / Non-starter | 1972—1976 | 0–0–1 1975 Roma ATH bronze: 4×100 m relay | |
| Hennadiy Bilodid | JUD | Olympics | 2000—2008 | 0–0–1 1999 Palma de Mallorca JUD bronze: team | |
| Yuriy Bilonoh | ATH | Olympics | 2000—2008 | 2–1–0 1995 Fukuoka ATH gold: shot put; 1997 Catania ATH gold: shot put; 2001 Beijing ATH silver: shot put | |
| Laura Bilotta | DIV | YOG | 2014 | 0–0–1 2017 Taipei DIV bronze: synchronized springboard (mixed) | |
| Dmitry Bilozerchev | GAR | Olympics | 1988 | 6–1–0 1985 Kobe GYM gold: all-around, floor, parallel bars, rings, pommelled horse, and team, silver: horizontal bar | |
| Matt Biondi | SWM | Olympics | 1984—1992 | 4–1–0 1985 Kobe SWI gold: 100 m freestyle, 200 m freestyle, 4×100 m freestyle relay, and 4×200 m freestyle relay, silver: 100 m butterfly | |
| Stefan Birčević | BKB | Olympics | 2016 | 1–0–0 2011 Shenzhen BAS gold | |
| Dane Bird-Smith | ATH | Olympics | 2016 | 1–0–0 2015 Gwangju ATH gold: 20 km walk | |
| Larry Bird | BKB | Olympics | 1992 | 1–0–0 1977 Sofia BAS gold | |
| Vera Biryukova | GRY | Olympics | 2016 | 2–0–1 2017 Taipei RGY gold: group 5 hoops and group 3 balls + 2 ropes, bronze: group all-around | |
| Ole Bischof | JUD | Olympics | 2008—2012 | 0–0–1 2003 Daegu JUD bronze: half-middleweight -81 kg | |
| Sabine Bischoff | FEN | Olympics | 1984 | 0–0–2 1979 Ciudad de México FEN bronze: foil team; 1985 Kobe FEN bronze: foil team | |
| Federica Biscia | SWM | Olympics | 2000 | 1–0–0 2001 Beijing SWI gold: 400 m medley | |
| Abby Bishop | BKB | Olympics | 2012 | 0–0–1 2011 Shenzhen BAS bronze | |
| Iso Bishop | WPO | Olympics | 2016 | 1–0–0 2015 Gwangju WAP gold | |
| Stelios Bismbas | ATH | Olympics / Torch Bearer | 1988—1996 | 0–0–1 1993 Buffalo ATH bronze: 110 m hurdles | |
| Edson Bispo | BKB | Olympics | 1956—1964 | 1–0–0 1963 Porto Alegre BAS gold | |
| Ralf Bißdorf | FEN | Olympics | 2000—2004 | 0–0–1 1995 Fukuoka FEN bronze: foil team | |
| Sonia Bisset | ATH | Olympics | 2000—2004 | 0–1–0 1997 Catania ATH silver: javelin throw | |
| Victor Bivol | JUD | Olympics | 2000—2004 | 0–0–1 1999 Palma de Mallorca JUD bronze: half-lightweight -66 kg | |
| Alexandru Bizim | ATH | Olympics / Opening Flagbearer | 1960 | 0–0–1 1959 Torino ATH bronze: javelin throw | |
| Đurđica Bjedov | SWM | Olympics | 1968 | 0–1–1 1970 Torino SWI silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay | |
| Ellie Black | GAR | Olympics | 2012—2024 | 1–2–3 2013 Kazan GYM silver: floor, bronze: balance beam; 2017 Taipei GYM gold: balance beam, silver: team, bronze: all-around and uneven bars | |
| Kim Black | SWM | Olympics | 2000 | 5–2–0 1997 Catania SWI gold: 4×200 m freestyle relay, silver: 200 m freestyle; 1999 Palma de Mallorca SWI gold: 200 m freestyle, 4×100 m freestyle relay, and 4×200 m freestyle relay, silver: 4×100 m medley relay (swam in heats only); 2001 Beijing SWI gold: 4×200 m freestyle relay | |
| Vakht'ang Blagidze | WRE | Olympics | 1980 | 1–0–0 1977 Sofia WRE gold: Greco-Roman flyweight -52 kg | |
| Yordanka Blagoeva | ATH | Olympics | 1968—1980 | 1–0–0 1965 Budapest ATH gold: high jump | |
| Kelly Blair | ATH | Olympics | 1996 | 0–0–1 1993 Buffalo ATH bronze: heptathlon | |
| Gavril Blajek | WPO | Olympics | 1960 | 0–0–1 1965 Budapest WAP bronze | |
| Dennis Blake | ATH | Olympics | 1992—1996 | 0–1–0 1997 Catania ATH silver: 4×400 m relay | |
| Moysés Blás | BKB | Olympics | 1960 | 1–0–0 1963 Porto Alegre BAS gold | |
| Waldemar Blatskauskas | BKB | Olympics | 1960 | 1–0–0 1963 Porto Alegre BAS gold | |
| Frank Bleckmann | FEN | Olympics | 1996 | 1–0–0 1991 Sheffield FEN gold: sabre team | |
| Gennady Bliznetsov | ATH | Olympics | 1964—1968 | 1–1–0 1963 Porto Alegre ATH gold: pole vault; 1965 Budapest ATH silver: pole vault | |
| Anastasiya Bliznyuk | GRY | Olympics | 2012—2020 | 3–0–0 2013 Kazan RGY gold: group all-around, group 10 clubs, and group 3 balls + 2 ribbons | |
| Liudmyla Blonska | ATH | Olympics | 2008 | 1–0–0 2005 İzmir ATH gold: heptathlon | |
| Andy Bloom | ATH | Olympics | 2000 | 1–2–0 1997 Catania ATH silver: discus throw; 1999 Palma de Mallorca ATH gold: shot put, silver: discus throw | |
| Ana Boban | SWM | Olympics | 1968 | 0–1–1 1970 Torino SWI silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay | |
| Philippe Bobin | ATH | Olympics | 1976 | 0–1–0 1975 Roma ATH silver: decathlon | |
| Ancuța Bobocel | ATH | Olympics | 2008—2016 | 0–1–0 2009 Beograd ATH silver: 3000 m steeplechase | |
| Pyotr Bochkaryov | ATH | Olympics | 1996 | 0–0–1 1991 Sheffield ATH bronze: pole vault (competed for the Soviet Union) | |
| Gábor Boczkó | FEN | Olympics | 2004—2016 | 0–1–1 1997 Catania FEN silver: épée team; 2003 Daegu FEN bronze: épée team | |
| Sébastien Bodet | SWM | Olympics | 2008 | 1–0–1 2005 İzmir SWI gold: 4×100 m freestyle relay; 2009 Beograd SWI bronze: 4×100 m freestyle relay | |
| András Bodnár | SWM/WPO | Olympics | 1960—1972 | 2–0–2 1961 Sofia SWI bronze: 4×100 m freestyle relay and WAP bronze; 1963 Pôrto Alegre WAP gold; 1965 Budapest WAP gold | |
| Antal Bodó | WRE | Olympics | 1980 | 0–0–1 1977 Sofia WRE bronze: Greco-Roman heavyweight -100 kg | |
| Gábor Bodó | VVO | Olympics | 1964 | 0–1–0 1965 Budapest VOL silver | |
| Richárd Bodor | SWM | Olympics | 2004—2008 | 0–0–1 2001 Beijing SWI bronze: 100 m breaststroke | |
| Ihor Bodrov | ATH | Olympics | 2008—2016 | 1–0–0 2013 Kazan ATH gold: 4×100 m relay | |
| Nadiya Bodrova | ATH | Olympics | 1996—2000 | 0–1–0 1985 Kobe ATH silver: 100 m hurdles (competed for the Soviet Union) | |
| Franco Boffi | ATH | Olympics | 1984 | 1–0–0 1985 Kobe ATH gold: 3000 m steeplechase | |
| Irina Bogacheva | ATH | Olympics | 1996—2004 | 1–0–0 1989 Duisburg ATH gold: marathon (competed for the Soviet Union) | |
| Andrey Bogdanov | SWM | Olympics | 1976 | 0–1–0 1977 Sofia SWI silver: 4×200 m freestyle relay | |
| Tijana Bogdanović | TKW | Olympics / YOG / Closing Flagbearer | 2014—2020 | 2–0–0 2017 Taipei TKW gold: bantamweight -53 kg and Kyorugi team | |
| Chiara Boggiatto | SWM | Olympics | 2004—2012 | 1–1–0 2009 Beograd SWI gold: 100 m breaststroke, silver: 4×100 m medley relay | |
| Mauro Bogliatto | ATH | Olympics | 1964 | 0–1–0 1963 Porto Alegre ATH silver: high jump | |
| Judit Bognár | ATH | Olympics / Non-starter | 1960—1972 | 0–1–2 1963 Porto Alegre ATH silver: shot put, bronze: discus throw; 1965 Budapest ATH bronze: shot put | |
| Yelena Bogomazova | SWM | Olympics | 2004—2008 | 0–0–2 2001 Beijing SWI bronze: 50 m breaststroke and 4×100 m medley relay | |
| Tanya Bogomilova-Dangalakova | SWM | Olympics | 1980—1988 | 2–0–1 1985 Kobe SWI gold: 100 m breaststroke and 200 m breaststroke, bronze: 200 m medley (competed as Tanya Bogomilova) | |
| Jaroslav Bohatý | ATH | Olympics | 1960 | 0–0–1 1959 Torino ATH bronze: 5000 m | |
| Dmytro Boiko | FEN | Olympics | 2012 | 2–1–0 2005 İzmir FEN silver: sabre team; 2007 Bangkok FEN gold: sabre team; 2011 Shenzhen FEN gold: sabre team | |
| Éric Boisse | FEN | Olympics | 2004 | 1–0–0 2001 Beijing FEN gold: épée team | |
| Evelyne Boisvert | DIV | Olympics | 1992 | 0–1–0 1993 Buffalo DIV silver: team | |
| Pavol Bojanovský | BKB | Olympics | 1980 | 0–0–1 1977 Sofia BAS bronze | |
| Claudia Bokel | FEN | Olympics / Administrator | 1996—2016 | 0–0–1 1993 Buffalo FEN bronze: épée team | |
| Kirsten Bolm | ATH | Olympics | 2004 | 0–0–1 1999 Palma de Mallorca ATH bronze: 4×100 m relay | |
| Flóra Bolonyai | WPO | Olympics | 2012 | 0–1–0 2017 Taipei WAP silver | |
| Aleksandr Boloshev | BKB | Olympics | 1972 | 1–1–0 1970 Torino BAS gold; 1973 Moskva BAS silver | |
| Yelena Bolsun | ATH | Olympics | 2004 | 1–0–1 2003 Daegu ATH gold: 200 m, bronze: 100 m | |
| Ruthie Bolton-Holifield | BKB | Olympics | 1996—2000 | 1–0–0 1991 Sheffield BAS gold (competed as Ruthie Bolton) | |
| Virginia Bonci | ATH | Olympics | 1968 | 1–0–0 1973 Moskva ATH gold: high jump (competed as Virginia Ioan) | |
| Oleksandr Bondar | DIV | Olympics / YOG | 2010—2020 | 1–1–0 2011 Shenzhen DIV silver: team; 2017 Taipei DIV gold: team | |
| Aleksey Bondarenko | GAR | Olympics | 2000—2004 | 0–2–0 1999 Palma de Mallorca GYM silver: floor and team | |
| Bohdan Bondarenko | ATH | Olympics | 2012—2016 | 1–0–0 2011 Shenzhen ATH gold: high jump | |
| Svitlana Bondarenko | SWM | Olympics | 1996—2004 | 2–2–0 1993 Buffalo SWI gold: 200 m breaststroke, silver: 100 m breaststroke; 1997 Catania SWI gold: 100 m breaststroke, silver: 200 m breaststroke | |
| Susanna Bonfiglio | BKB | Olympics | 1996 | 1–0–0 1995 Fukuoka BAS gold | |
| Anna Bongiorni | ATH | Olympics / YOG | 2010—2024 | 0–0–1 2017 Taipei ATH bronze: 200 m | |
| Idalmis Bonne | ATH | Olympics | 1992—2000 | 0–2–1 1993 Buffalo ATH silver: 4×400 m relay; 1997 Catania ATH silver: 4×400 m relay, bronze: 400 m | |
| Yaowapa Boorapolchai | TKW | Olympics | 2004 | 0–2–1 2003 Daegu TKW bronze: flyweight -51 kg; 2005 İzmir TKW silver: flyweight -51 kg; 2007 Bangkok TKW silver: flyweight -51 kg | |
| Rachel Bootsma | SWM | Olympics | 2012 | 0–0–2 2015 Gwangju SWI bronze: 100 m backstroke and 4×100 m medley relay (swam in heats only) | |
| Barna Bor | JUD | Olympics | 2008—2016 | 0–1–2 2009 Beograd JUD bronze: heavyweight +100 kg; 2013 Kazan JUD silver: heavyweight +100 kg, bronze: team | |
| Reinhard Borchert | ATH | Olympics | 1976 | 0–0–1 1975 Roma ATH bronze: 4×100 m relay | |
| Yannick Borel | FEN | Olympics | 2012—2024 | 3–0–0 2013 Kazan FEN gold: épée team; 2015 Gwangju FEN gold: épée and épée team | |
| Andrea Borella | FEN | Olympics | 1984—1992 | 2–1–3 1979 Ciudad de México FEN silver: foil team; 1981 București FEN gold: foil team; 1983 Edmonton FEN gold: foil team, bronze: foil; 1985 Kobe FEN bronze: foil team; 1989 Duisburg FEN bronze: foil team | |
| Karla Borger | VBV | Olympics | 2016—2020 | 1–0–0 2011 Shenzhen BVO gold | |
| Gustavo Borges | SWM | Olympics / Closing Flagbearer | 1992—2004 | 0–2–0 1995 Fukuoka SWI silver: 100 m freestyle and 4×100 m freestyle relay | |
| Flavio Borghi | ATH | Non-starter | 1980 | 0–0–1 1979 Ciudad de México ATH bronze: 4×400 m relay | |
| Alessandro Bori | SWM | YOG | 2014 | 0–0–1 2019 Napoli SWI bronze: 4×100 m freestyle relay | |
| Françoise Borie | SWM | Olympics | 1964 | 1–1–0 1965 Budapest SWI gold: 100 m backstroke; 1967 Tokyo SWI silver: 100 m backstroke | |
| Zsolt Borkai | GAR | Olympics / Administrator | 1988—2017 | 1–1–1 1985 Kobe GYM silver: horizontal bar, bronze: pommelled horse; 1987 Zagreb GYM gold: pommelled horse | |
| Mickaël Borot | TKW | Olympics | 2008 | 1–0–0 2003 Daegu TKW gold: heavyweight +84 kg | |
| Andrea Borrell | BKB | Olympics | 1980—1992 | 0–1–0 1979 Ciudad de México BAS silver | |
| Mihai Borș | GAR | Olympics | 1976 | 0–0–2 1973 Moskva GYM bronze: rings and team | |
| Lisa Borsholt | SWM | Olympics | 1976—1984 | 0–0–1 1983 Edmonton SWI bronze: 200 m breaststroke | |
| Francesca Bortolozzi-Borella | FEN | Olympics | 1988—1996 | 3–0–0 1989 Duisburg FEN gold: foil team (competed as Francesca Bortolozzi); 1991 Sheffield FEN gold: foil team (competed as Francesca Bortolozzi); 1993 Buffalo FEN gold: foil team (competed as Francesca Bortolozzi) | |
| Ihor Borysyk | SWM | Olympics | 2008—2012 | 3–0–0 2007 Bangkok SWI gold: 50 m breaststroke; 2009 Beograd SWI gold: 100 m breaststroke and 200 m breaststroke | |
| Edith Bosch | JUD | Olympics | 2000—2012 | 0–0–1 2001 Beijing JUD bronze: middleweight -70 kg | |
| Lucia Bosetti | VVO | Olympics | 2012 | 1–0–0 2009 Beograd VOL gold | |
| Cathy Boswell | BKB | Olympics | 1984 | 1–0–0 1983 Edmonton BAS gold | |
| Mark Boswell | ATH | Olympics | 2000—2004 | 0–1–0 1999 Palma de Mallorca ATH silver: high jump | |
| Pavel Botev | JUD | Olympics | 1988 | 0–0–1 1985 Kobe JUD bronze: extra-lightweight -60 kg | |
| Maria Both | SWM | Olympics | 1956 | 0–1–1 1961 Sofia SWI silver: 4×100 m medley relay, bronze: 100 m backstroke | |
| Anita Botnen | GAR | Olympics | 1984 | 0–0–2 1983 Edmonton GYM bronze: balance beam and team | |
| Beth Botsford | SWM | Olympics | 1996 | 0–2–0 2003 Daegu SWI silver: 50 m backstroke and 4×100 m medley relay | |
| Joachim Bottieau | JUD | Olympics | 2012—2016 | 0–0–1 2009 Beograd JUD bronze: lightweight -73 kg | |
| Brahim Boulami | ATH | Olympics | 1996—2000 | 0–1–1 1995 Fukuoka ATH silver: 5000 m, bronze: 3000 m steeplechase | |
| John Boulter | ATH | Olympics | 1964—1968 | 1–1–0 1963 Porto Alegre ATH gold: 4×400 m relay, silver: 800 m | |
| Lorys Bourelly | SWM | Olympics | 2016 | 0–0–1 2011 Shenzhen SWI bronze: 4×100 m freestyle relay | |
| Joël Bourgeois | ATH | Olympics | 1996—2000 | 0–1–1 1995 Fukuoka ATH silver: 3000 m steeplechase; 1999 Palma de Mallorca ATH bronze: 3000 m steeplechase | |
| Alexandre Bouzaid | FEN | Olympics | 2012—2016 | 0–1–0 2007 Bangkok FEN silver: épée team (competed for France) | |
| Christopher Bowie | SWM | Olympics | 1992 | 0–0–2 1991 Sheffield SWI bronze: 1500 m freestyle, bronze: 4×200 m freestyle relay | |
| Kevin Boyd | SWM | Olympics | 1988 | 0–0–2 1987 Zagreb SWI bronze: 400 m freestyle and 4×200 m freestyle relay | |
| Greg Boyer | WPO | Olympics / Referee | 1988—2000 | 1–0–0 1979 Ciudad de México WAP gold | |
| Svetlana Boyko | FEN | Olympics | 1996—2008 | 0–0–2 1999 Palma de Mallorca FEN bronze: foil and foil team | |
| Lauren Boyle | SWM | Olympics | 2008—2016 | 2–2–1 2011 Shenzhen SWI gold: 400 m freestyle and 800 m freestyle, silver: 200 m freestyle and 4×200 m freestyle relay, bronze: 1500 m freestyle | |
| Kamil Brabenec | BKB | Olympics | 1972—1980 | 0–0–1 1977 Sofia BAS bronze | |
| Bill Bradley | BKB | Olympics | 1964 | 1–0–0 1965 Budapest BAS gold | |
| Mark Bradshaw | DIV | Olympics | 1988 | 0–0–1 1985 Kobe DIV bronze: 3 m springboard | |
| Rui Bragança | TKW | Olympics | 2016—2020 | 0–2–0 2015 Gwangju TKW silver: flyweight -58 kg; 2017 Taipei TKW silver: flyweight -58 kg | |
| Amar Brahmia | Other | 1995 | 0–0–1 1981 București ATH bronze: 1500 m | ||
| Ali Brakchi | ATH | Olympics | 1960 | 0–0–2 1959 Torino ATH bronze: 4×100 m relay and long jump | |
| Dorothea Brandt | SWM | Olympics | 2004—2016 | 0–1–0 2009 Beograd SWI silver: 50 m freestyle | |
| Slobodan Branković | ATH | Olympics | 1988—1992 | 0–1–0 1987 Zagreb ATH silver: 4×400 m relay (competed for Yugoslavia) | |
| Keith Brantly | ATH | Olympics | 1996 | 1–0–0 1985 Kobe ATH gold: 10000 m | |
| Sabine Braun | ATH | Olympics | 1984—2000 | 0–1–0 1989 Duisburg ATH silver: heptathlon (competed for West Germany) | |
| Attilio Bravi | ATH | Olympics | 1960 | 1–0–0 1959 Torino ATH gold: long jump | |
| Romanas Brazdauskis | BKB | Olympics | 1992 | 0–1–0 1989 Duisburg BAS silver (competed for the Soviet Union) | |
| Dejan Brđović | VVO | Olympics | 1996 | 1–0–0 1987 Zagreb VOL gold | |
| Elaine Breeden | SWM | Olympics | 2008 | 0–1–0 2007 Bangkok SWI silver: 4×100 m medley relay | |
| Christina Brehmer-Lathan | ATH | Olympics | 1976—1980 | 0–0–1 1979 Ciudad de México ATH bronze: 400 m (competed as Christina Brehmer) | |
| Alexandre Bretholz | FEN | Olympics | 1968 | 1–0–0 1967 Tokyo FEN gold: épée team | |
| Serhiy Breus | SWM | Olympics | 2008 | 3–1–2 2003 Daegu SWI silver: 50 m butterfly; 2005 İzmir SWI gold: 50 m butterfly and 100 m butterfly; 2007 Bangkok SWI gold: 50 m butterfly, bronze: 100 m butterfly and 4×100 m medley relay | |
| Derrick Brew | ATH | Olympics | 2004 | 1–0–0 1999 Palma de Mallorca ATH gold: 4×400 m relay | |
| Graeme Brewer | SWM | Olympics | 1980—1984 | 0–0–1 1979 Ciudad de México SWI bronze: 400 m freestyle | |
| Draško Brguljan | WPO | Olympics / Opening Flagbearer | 2008—2020 | 2–0–0 2005 İzmir WAP gold; 2007 Bangkok WAP gold | |
| Hartmut Briesenick | ATH | Olympics | 1972 | 1–0–0 1970 Torino ATH gold: shot put | |
| Fons Brijdenbach | ATH | Olympics | 1976—1980 | 1–0–0 1977 Sofia ATH gold: 400 m | |
| Debbie Brill | ATH | Olympics | 1972—1984 | 0–1–0 1977 Sofia ATH silver: high jump | |
| Ashton Brinkworth | SWM | YOG | 2018 | 0–0–1 2019 Napoli SWI bronze: 4×200 m freestyle relay | |
| Ryan Broekhoff | BKB | Olympics | 2016 | 0–1–0 2013 Kazan BAS silver | |
| Almut Brömmel | ATH | Olympics | 1956—1960 | 1–0–1 1961 Sofia ATH bronze: javelin throw (competed for West Germany); 1963 Porto Alegre ATH gold: javelin throw (competed for West Germany) | |
| Jean-Claude Brondani | JUD | Olympics | 1972 | 0–0–1 1967 Tokyo JUD bronze: heavyweight +93 kg | |
| Véronique Brouquier | FEN | Olympics | 1980—1984 | 0–0–1 1977 Sofia FEN bronze: foil team | |
| Alicia Brown | ATH | Olympics | 2016—2020 | 0–1–0 2013 Kazan ATH silver: 4×400 m relay | |
| Cindy Brown | BKB | Olympics | 1988 | 0–1–0 1985 Kobe BAS silver | |
| Kemarley Brown | ATH | Olympics | 2016 | 0–1–0 2015 Gwangju ATH silver: 100 m (competed for Jamaica) | |
| Nic Brown | SWM | YOG | 2014 | 0–1–0 2015 Gwangju SWI silver: 4×200 m freestyle relay (swam in heats only) | |
| Dan Browne | ATH | Olympics | 2004 | 0–1–1 1997 Catania ATH silver: 10000 m, bronze: 5000 m | |
| Suki Brownsdon | SWM | Olympics | 1980—1992 | 0–0–1 1987 Zagreb SWI bronze: 100 m breaststroke | |
| Corrie de Bruin | ATH | Olympics | 1996 | 0–1–1 1995 Fukuoka ATH bronze: shot put; 1997 Catania ATH silver: shot put | |
| Erik de Bruin | ATH | Olympics | 1984—1988 | 0–1–0 1989 Duisburg ATH silver: discus throw | |
| Lyubov Bruletova | JUD | Olympics | 2000—2004 | 0–0–1 1995 Fukuoka JUD bronze: extra-lightweight -48 kg | |
| Valery Brumel | ATH | Olympics | 1960—1964 | 2–0–0 1961 Sofia ATH gold: high jump; 1963 Porto Alegre ATH gold: high jump | |
| Rachele Bruni | OWS | Olympics | 2016—2020 | 1–0–0 2011 Shenzhen SWI gold: 10 km open water | |
| Ursel Brunner | SWM | Olympics | 1960—1964 | 1–0–2 1963 Porto Alegre SWI gold: 400 m freestyle, bronze: 100 m freestyle and 100 m backstroke | |
| Thierry Brusseau | ATH | Olympics | 1992 | 0–0–1 1989 Duisburg ATH bronze: 3000 m steeplechase | |
| Niall Bruton | ATH | Olympics | 1996 | 1–0–0 1991 Sheffield ATH gold: 1500 m | |
| Māris Bružiks | ATH | Olympics / Non-starter | 1992—1996 | 0–0–1 1987 Zagreb ATH bronze: triple jump (competed for the Soviet Union) | |
| Aleksey Bryansky | SWM | Olympics | 2016 | 0–0–1 2017 Taipei SWI bronze: 4×100 m freestyle relay (swam in heats only) | |
| Kelci Bryant | DIV | Olympics | 2008—2012 | 0–2–0 2011 Shenzhen DIV silver: 1 m springboard and team | |
| Rosalyn Bryant | ATH | Olympics | 1976 | 1–1–0 1977 Sofia ATH gold: 400 m; 1979 Ciudad de México ATH silver: 400 m | |
| Oleksiy Bryzhalov | FEN | Olympics | 1996—2000 | 1–0–0 1997 Catania FEN gold: foil team |