Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Takahiro Mori | SWM | Olympics | 2004 | 3–0–2 1999 Palma de Mallorca SWI bronze: 200 m medley and 400 m medley; 2001 Beijing SWI gold: 200 m medley; 2003 Daegu SWI gold: 200 m medley and 400 m medley | |
| Lucia Morico | JUD | Olympics | 2004—2008 | 0–0–1 1999 Palma de Mallorca JUD bronze: open class | |
| Mamoru Morimoto | ATH | Olympics | 1964 | 1–1–0 1963 Porto Alegre ATH gold: 800 m, silver: 1500 m | |
| Maiko Morio | GAR | Olympics | 1984—1988 | 0–0–1 1985 Kobe GYM bronze: floor | |
| Koichiro Morioka | ATH | Olympics | 2008—2016 | 0–0–2 2005 İzmir ATH bronze: 20 km walk; 2007 Bangkok ATH bronze: 20 km walk | |
| Jungo Morita | VVO | Olympics | 1968—1972 | 1–0–0 1967 Tokyo VOL gold | |
| Carlo Mornati | ROW | Olympics | 1996—2008 | 0–1–1 1993 Buffalo ROW silver: lightweight coxless pairs, bronze: coxless pairs | |
| Dmitry Morozov | JUD | Olympics | 2000 | 0–2–1 1995 Fukuoka JUD silver: team, bronze: middleweight -86 kg; 2001 Beijing JUD silver: middleweight -90 kg | |
| Vladimir Morozov | SWM | Olympics | 2012—2020 | 4–1–1 2013 Kazan SWI gold: 50 m freestyle, 100 m freestyle, 4×100 m freestyle relay, and 4×100 m medley relay, silver: 50 m backstroke, bronze: 50 m breaststroke | |
| Devon Morris | ATH | Olympics | 1984—1992 | 1–0–0 1989 Duisburg ATH gold: 4×400 m relay | |
| Jay Mortenson | SWM | Olympics | 1988 | 1–0–1 1987 Zagreb SWI gold: 4×100 m medley relay, bronze: 100 m backstroke | |
| Leonid Moseyev | ATH | Olympics | 1976—1980 | 1–0–1 1977 Sofia ATH gold: 10000 m, bronze: 5000 m | |
| Kseniya Moskvina | SWM | Olympics | 2008 | 0–0–1 2009 Beograd SWI bronze: 4×100 m medley relay | |
| Justyna Mospinek | ARC | Olympics | 2004—2008 | 0–0–2 2005 İzmir ARC bronze: recurve team; 2009 Beograd ARC bronze: recurve mixed team | |
| Anthony Mosse | SWM | Olympics | 1984—1988 | 1–2–1 1983 Edmonton SWI bronze: 200 m butterfly; 1985 Kobe SWI silver: 200 m butterfly; 1987 Zagreb SWI gold: 200 m butterfly, silver: 100 m butterfly | |
| Nico Motchebon | ATH | Olympics | 1996 | 0–0–1 1993 Buffalo ATH bronze: 800 m | |
| Lucimar Moura | ATH | Olympics | 2004—2008 | 0–1–0 2001 Beijing ATH silver: 4×100 m relay | |
| Michail Mouroutsos | TKW | Olympics / Olympic Flagbearer | 2000—2004 | 0–0–1 2005 İzmir TKW bronze: featherweight -67 kg | |
| Meriem Moussa | JUD | Olympics | 2008 | 0–0–2 2007 Bangkok JUD bronze: extra-lightweight -48 kg; 2011 Shenzhen JUD bronze: half-lightweight -52 kg | |
| Franck Martial Moussima | JUD | Olympics / Opening Flagbearer | 2004—2008 | 0–1–0 2007 Bangkok JUD silver: half-heavyweight -100 kg | |
| Nawal El-Moutawakel | ATH | Olympics / Administrator / Olympic Flagbearer | 1984—2024 | 1–0–1 1985 Kobe ATH bronze: 400 m hurdles; 1987 Zagreb ATH gold: 400 m hurdles | |
| Sotirios Moutsanas | ATH | Olympics | 1984 | 0–1–0 1981 București ATH silver: 800 m | |
| Roberto Moya | ATH | Olympics | 1992—1996 | 0–0–1 1989 Duisburg ATH bronze: discus throw | |
| Kira Mozgalova | SHO | Olympics | 2012 | 0–1–1 2007 Bangkok SHO silver: 25 m sporting pistol team, bronze: 10 m air pistol | |
| Aleksandr Mozhayev | FEN | Olympics | 1980 | 2–1–0 1979 Ciudad de México FEN silver: épée team; 1985 Kobe FEN gold: épée and épée team | |
| Thuso Mpuang | ATH | Olympics | 2008 | 1–1–2 2009 Beograd ATH bronze: 200 m and 4×100 m relay; 2011 Shenzhen ATH gold: 4×100 m relay, silver: 200 m | |
| Anna Mroszczak | FEN | YOG | 2014 | 0–0–1 2019 Napoli FEN bronze: épée team | |
| Magdalena Mróz | TEN | Olympics | 1992 | 0–1–0 1997 Catania silver: doubles (competed as Magdalena Feistel) | |
| Mirosław Mruk | ROW | Olympics | 1988 | 1–0–0 1987 Zagreb ROW gold: quadruple sculls | |
| Giorgi Mshvenieradze | WPO | Olympics | 1980—1988 | 1–0–0 1985 Kobe WAP gold | |
| Nuzgari Mshvenieradze | WPO | Olympics | 1976 | 1–0–0 1973 Moskva WAP gold | |
| Carline Muir | ATH | Olympics | 2008—2016 | 1–0–1 2009 Beograd ATH gold: 4×400 m relay, bronze: 400 m | |
| Marianne Muis | SWM | Olympics | 1988—1996 | 1–2–2 1987 Zagreb SWI gold: 4×100 m freestyle relay, silver: 4×200 m freestyle relay, bronze: 200 m medley; 1995 Fukuoka SWI silver: 100 m freestyle, bronze: 50 m freestyle | |
| Mildred Muis | SWM | Olympics | 1988—1992 | 1–2–2 1987 Zagreb SWI gold: 4×100 m freestyle relay, silver: 200 m medley and 4×200 m freestyle relay, bronze: 100 m freestyle and 4×100 m medley relay | |
| Razija Mujanović | BKB | Olympics | 1988 | 1–0–1 1985 Kobe BAS bronze; 1987 Zagreb BAS gold | |
| Carolina Mújica | BKB | Olympics | 1992 | 0–1–0 1991 Sheffield BAS silver | |
| Sadik Mujkič | ROW | Olympics | 1988—1996 | 0–0–1 1987 Zagreb ROW bronze: eights (competed for Yugoslavia) | |
| Margarita Mukashova | ATH | Olympics | 2012—2016 | 1–0–0 2013 Kazan ATH gold: 800 m | |
| Yury Mukhin | SWM | Olympics | 1992 | 0–0–1 1995 Fukuoka SWI bronze: 4×100 m medley relay (competed for Russia) | |
| Olha Mukomol | SWM | Olympics | 2000—2004 | 1–1–0 2001 Beijing SWI silver: 50 m freestyle; 2003 Daegu SWI gold: 50 m freestyle | |
| Nedžad Mulabegović | ATH | Olympics | 2004—2012 | 0–0–1 2003 Daegu ATH bronze: shot put | |
| Katalin Müller-Száll | GAR | Olympics | 1960—1968 | 1–0–0 1963 Porto Alegre GYM gold: team (competed as Katalin Müller) | |
| Helmar Müller | ATH | Olympics | 1968 | 1–1–0 1967 Tokyo ATH gold: 4×400 m relay, silver: 400 m | |
| Mun Yu-Ra | WLF | Olympics | 2012 | 0–1–0 2011 Shenzhen WLT silver: light-heavyweight -69 kg | |
| Marina Munćan | ATH | Olympics | 2012 | 1–0–0 2009 Beograd ATH gold: 1500 m | |
| Markus Münch | ATH | Olympics | 2012 | 0–0–1 2009 Beograd ATH bronze: discus throw | |
| Thomas Munkelt | ATH | Olympics | 1976—1980 | 0–1–1 1973 Moskva ATH bronze: 110 m hurdles; 1979 Ciudad de México ATH silver: 110 m hurdles | |
| Felipe Muñoz | SWM | Olympics / Administrator / Opening Flagbearer | 1968—2012 | 0–0–1 1973 Moskva SWI bronze: 200 m breaststroke | |
| Andrei Muntean | GAR | Olympics / YOG | 2010—2024 | 0–0–1 2017 Taipei GYM bronze: vault | |
| János Murányi | ATH | Olympics | 1972 | 1–0–0 1970 Torino ATH gold: discus throw | |
| Vladimir Muravyov | ATH | Olympics | 1980—1988 | 0–1–1 1981 București ATH silver: 4×100 m relay; 1983 Edmonton ATH bronze: 4×100 m relay | |
| Emil Mureșan | WPO | Olympics / Non-starter | 1960—1964 | 0–0–1 1965 Budapest WAP bronze | |
| Tănase Mureșanu | FEN | Olympics / Referee | 1960—1984 | 0–1–0 1965 Budapest FEN silver: foil team | |
| Andi Murez | SWM | Olympics / Opening Flagbearer | 2016—2024 | 1–1–1 2013 Kazan SWI gold: 4×200 m freestyle relay, silver: 4×100 m freestyle relay, bronze: 4×100 m medley relay (swam in heats only) (competed for the United States) | |
| Yojiro Muro | ATH | Olympics | 1964 | 0–1–0 1961 Sofia ATH silver: 4×100 m relay | |
| Shigenobu Murofushi | ATH | Olympics / Opening Flagbearer | 1972—1984 | 0–0–1 1967 Tokyo ATH bronze: hammer throw | |
| Sei Muroya | FBL | Olympics | 2016 | 0–0–1 2015 Gwangju FTB bronze | |
| Patrick Murphy | SWM | Olympics | 2004—2008 | 0–1–0 2003 Daegu SWI silver: 4×100 m freestyle relay | |
| Sean Murphy | SWM | Olympics | 1988 | 0–1–0 1985 Kobe SWI silver: 200 m backstroke | |
| Fergus Murray | ATH | Olympics | 1964 | 0–0–1 1965 Budapest ATH bronze: 5000 m | |
| Milan Muškatirović | WPO | Olympics | 1960—1964 | 1–0–0 1959 Torino WAP gold | |
| Kemal Muslubaş | SAL | Olympics | 2004—2008 | 0–1–0 2005 İzmir SAI silver: Laser men | |
| Aliya Mustafina | GAR | Olympics | 2012—2016 | 3–1–0 2013 Kazan GYM gold: all-around, uneven bars, and team, silver: balance beam | |
| Marin Mustață | FEN | Olympics | 1976—1984 | 1–0–2 1977 Sofia FEN gold: sabre team; 1979 Ciudad de México FEN bronze: sabre; 1981 București FEN bronze: sabre team | |
| Emir Mutapčić | BKB | Olympics | 1984 | 1–1–0 1983 Edmonton BAS silver; 1987 Zagreb BAS gold | |
| Līna Mūze-Sirmā | ATH | Olympics | 2012—2024 | 0–1–0 2015 Gwangju ATH silver: javelin throw | |
| Alwyn Myburgh | ATH | Olympics | 2000—2008 | 1–0–0 2001 Beijing ATH gold: 400 m hurdles | |
| Volodymyr Mykhailenko | ATH | Olympics | 2000 | 0–1–0 2001 Beijing ATH silver: decathlon | |
| Andriy Mykhailychenko | GAR | Olympics | 2004 | 1–1–0 2003 Daegu GYM gold: horizontal bar, silver: team | |
| John Mykkanen | SWM | Olympics | 1984 | 0–1–0 1985 Kobe SWI silver: 400 m freestyle | |
| Valentyna Myronchuk | ATH | Olympics | 2016 | 1–1–0 2017 Taipei ATH gold: 20 km walk team; 2019 Napoli ATH silver: 20 km walk team | |
| Anatoly Myshkin | BKB | Olympics | 1976—1980 | 0–1–0 1973 Moskva BAS silver | |
| Jana Myšková-Klusáčková | SWM | Olympics | 2004—2008 | 0–0–1 2005 İzmir SWI bronze: 100 m freestyle (competed as Jana Myšková) | |
| Piotr Myszka | SAL | Olympics | 2016—2020 | 0–2–0 2005 İzmir SAI silver: Windsurfer men, silver: team | |
| Dmytro Mytrofanov | BOX | Olympics | 2016 | 1–0–0 2013 Kazan BOX gold: middleweight -75 kg | |
| Amadou N'Diaye | ATH | Olympics | 2016 | 0–1–0 2013 Kazan ATH silver: 400 m hurdles | |
| Elsa N'Guessan | SWM | Olympics | 2004 | 0–0–2 2005 İzmir SWI bronze: 4×100 m freestyle relay and 4×200 m freestyle relay | |
| Jonathan N'Senga | ATH | Olympics | 1996—2000 | 1–2–0 1995 Fukuoka ATH gold: 110 m hurdles; 1997 Catania ATH silver: 110 m hurdles; 1999 Palma de Mallorca ATH silver: 110 m hurdles | |
| Heiki Nabi | WRE | Olympics / Closing Flagbearer | 2012—2024 | 0–0–1 2005 İzmir WRE bronze: Greco-Roman heavyweight -96 kg | |
| Khurshid Nabiyev | JUD | Olympics | 2008 | 1–0–0 2007 Bangkok JUD gold: middleweight -90 kg | |
| Oleksandr Nadtoka | ROW | Olympics | 2016 | 0–2–0 2013 Kazan ROW silver: double sculls; 2015 Gwangju ROW silver: eights | |
| Kensuke Nagai | FBL | Olympics | 2012 | 0–0–1 2009 Beograd FTB bronze | |
| Tomoko Nagai | SWM | Olympics | 2004 | 0–0–2 2003 Daegu SWI bronze: 100 m freestyle and 4×100 m medley relay | |
| Yuri Nagai | HOC | Olympics | 2016—2024 | 0–0–1 2013 Kazan HOK bronze | |
| Takanori Nagase | JUD | Olympics | 2016—2024 | 2–0–0 2013 Kazan JUD gold: half-middleweight -81 kg and team | |
| Gerd Nagel | ATH | Olympics | 1984 | 1–0–2 1979 Ciudad de México ATH gold: high jump; 1981 București ATH bronze: high jump; 1985 Kobe ATH bronze: high jump | |
| István Nagy | ATH | Olympics | 1980 | 0–1–0 1981 București ATH silver: 200 m | |
| Péter Nagy | WLF | Olympics | 2012—2020 | 1–0–0 2011 Shenzhen WLT gold: super-heavyweight +105 kg | |
| Tímea Nagy | FEN | Olympics | 1996—2004 | 6–0–0 1989 Duisburg FEN gold: épée team; 1993 Buffalo FEN gold: épée team; 1995 Fukuoka FEN gold: épée and épée team; 1997 Catania FEN gold: épée and épée team | |
| Viktor Nagy | WPO | Olympics | 2012—2020 | 0–1–0 2005 İzmir WAP silver | |
| Zsigmond Nagy | ATH | Olympics | 1960—1964 | 1–1–1 1959 Torino ATH silver: shot put; 1961 Sofia ATH bronze: shot put; 1963 Porto Alegre ATH gold: shot put | |
| Miroslava Najdanovski | SWM | Olympics | 2004—2012 | 0–0–1 2009 Beograd SWI bronze: 100 m freestyle (competed for Serbia) | |
| Mai Nakagawa | DIV | Olympics | 2008—2012 | 0–0–3 2007 Bangkok DIV bronze: platform and synchronized platform; 2015 Gwangju DIV bronze: platform | |
| Isao Nakajima | SWM | Olympics | 1964 | 0–0–1 1963 Porto Alegre SWI bronze: 200 m butterfly | |
| Kanami Nakamaki | SWA | Olympics | 2016 | 0–2–0 2013 Kazan SYN silver: team and team Free Routine Combination | |
| Katsumi Nakamura | SWM | Olympics | 2016—2020 | 0–2–2 2013 Kazan SWI silver: 4×100 m medley relay; 2017 Taipei SWI silver: 50 m freestyle, bronze: 100 m freestyle and 4×100 m medley relay | |
| Kenzo Nakamura | JUD | Olympics | 1996—2000 | 1–0–1 1995 Fukuoka JUD gold: lightweight -71 kg, bronze: team | |
| Mai Nakamura | SWM | Olympics | 1996—2000 | 1–1–0 2001 Beijing SWI gold: 100 m backstroke, silver: 50 m backstroke | |
| Reiko Nakamura | SWM | Olympics | 2004—2008 | 2–1–1 2001 Beijing SWI gold: 200 m backstroke; 2003 Daegu SWI gold: 200 m backstroke, silver: 100 m backstroke, bronze: 4×100 m medley relay | |
| Yuko Nakanishi | SWM | Olympics | 2000—2008 | 1–0–0 2001 Beijing SWI gold: 200 m butterfly | |
| Nozomi Nakano-Sato | FEN | Olympics | 2012—2020 | 0–0–2 2007 Bangkok FEN bronze: foil team; 2009 Beograd FEN bronze: épée | |
| Ayako Nakano | SWM | Olympics | 1988—1992 | 0–1–1 1993 Buffalo SWI silver: 4×100 m medley relay, bronze: 100 m freestyle | |
| Hiroyuki Nakano | ATH | Olympics | 2012 | 0–1–0 2011 Shenzhen ATH silver: 4×400 m relay | |
| Peko Nakano | VBV | Olympics | 1996 | 1–0–0 1985 Kobe VOL gold | |
| Satoru Nakano | SWM | Olympics | 1964—1968 | 0–0–2 1967 Tokyo SWI bronze: 4×100 m freestyle relay and 4×200 m freestyle relay | |
| Takashi Nakano | SWM | Olympics | 2008 | 0–3–0 2003 Daegu SWI silver: 200 m backstroke; 2005 İzmir SWI silver: 200 m backstroke; 2007 Bangkok SWI silver: 200 m backstroke | |
| Miki Nakao | SWM | Olympics | 1996—2000 | 2–0–0 1997 Catania SWI gold: 200 m backstroke; 1999 Palma de Mallorca SWI gold: 200 m backstroke | |
| Takuya Nakase | GAR | Olympics | 2008 | 2–1–0 2009 Beograd GYM gold: parallel bars and team, silver: horizontal bar | |
| Masami Nakata | GRY | Olympics | 2000 | 0–2–1 2003 Daegu RGY silver: group all-around and group 5 ribbons, bronze: group 3 hoops + 2 balls | |
| Katsuhiko Nakaya | ATH | Olympics | 1980—1984 | 0–0–1 1981 București ATH bronze: 4×400 m relay | |
| Akinori Nakayama | GAR | Olympics | 1968—1972 | 4–0–0 1965 Budapest GYM gold: all-around and team; 1967 Tokyo GYM gold: all-around and team | |
| Seira Nakayama | FEN | Olympics | 2012 | 0–1–0 2005 İzmir FEN silver: sabre team | |
| Danira Nakić | BKB | Olympics | 1988 | 1–0–0 1987 Zagreb BAS gold | |
| Nam Hyeon-Hui | FEN | Olympics | 2004—2016 | 1–2–0 2003 Daegu FEN gold: foil, silver: foil team; 2005 İzmir FEN silver: foil team | |
| Andrea Nannini | VVO | Olympics | 1976 | 1–0–0 1970 Torino VOL gold | |
| Ryan Napoleon | SWM | Olympics | 2012 | 1–0–1 2013 Kazan SWI gold: 400 m freestyle, bronze: 4×200 m freestyle relay | |
| Arminas Narbekovas | FBL | Olympics | 1988 | 1–0–0 1987 Zagreb FTB gold | |
| Ante Nardeli | WPO | Olympics | 1960—1964 | 2–0–0 1959 Torino WAP gold; 1961 Sofia WAP gold | |
| Kenji Narisako | ATH | Olympics | 2008 | 1–1–0 2005 İzmir ATH gold: 400 m hurdles, silver: 4×400 m relay | |
| Oleksandr Nartov | ATH | Olympics | 2008 | 0–0–1 2007 Bangkok ATH bronze: high jump | |
| Marvin Nash | ATH | Olympics | 1976 | 0–1–0 1975 Roma ATH silver: 4×100 m relay | |
| Steve Nash | BKB | Olympics / Torch Bearer | 2000—2010 | 0–1–0 1993 Buffalo BAS silver | |
| Rozaliya Nasretdinova | SWM | Olympics / YOG | 2014—2016 | 1–0–1 2015 Gwangju SWI gold: 50 m freestyle, bronze: 4×100 m freestyle relay | |
| Katja Nass | FEN | Olympics | 1996—2000 | 1–1–1 1993 Buffalo FEN bronze: épée team; 1995 Fukuoka FEN gold: foil team, silver: épée | |
| Liliana Năstase | ATH | Olympics | 1992—1996 | 1–1–0 1985 Kobe ATH silver: heptathlon; 1987 Zagreb ATH gold: heptathlon | |
| Vasile Năstase | ROW | Olympics | 1992 | 2–0–0 1987 Zagreb ROW gold: coxed fours; 1989 Duisburg ROW gold: coxed fours | |
| Musa Nastuiev | JUD | Olympics | 2004 | 0–1–0 1999 Palma de Mallorca JUD silver: half-lightweight -66 kg | |
| Goran Nava | ATH | Olympics | 2008 | 0–1–1 2009 Beograd ATH silver: 800 m, bronze: 1500 m | |
| Mohamed Reza Navaie | WRE | Olympics | 1976 | 0–1–0 1973 Moskva WRE silver: freestyle featherweight -62 kg | |
| Ignas Navakauskas | CSP | Olympics | 2016—2024 | 1–0–0 2013 Kazan CAN gold: K1 200 m | |
| Mara Navarria | FEN | Olympics | 2012—2024 | 0–0–1 2009 Beograd FEN bronze: épée team | |
| Daria Navumava | WLF | Olympics | 2016—2020 | 0–1–0 2017 Taipei WLT silver: middle-heavyweight -75 kg | |
| Anastasiya Nazarenko | GRY | Olympics | 2012 | 3–0–0 2013 Kazan RGY gold: group all-around, group 10 clubs, and group 3 balls + 2 ribbons | |
| Anna Nazarova | ATH | Olympics | 2012 | 1–0–0 2011 Shenzhen ATH gold: long jump | |
| Irina Nazarova | ATH | Olympics | 1980 | 1–0–1 1981 București ATH gold: 4×400 m relay, bronze: 200 m | |
| Nataliya Nazarova | ATH | Olympics | 2000—2012 | 2–0–0 2005 İzmir ATH gold: 400 m and 4×400 m relay | |
| Armen Nazaryan | JUD | Olympics | 2004—2012 | 0–0–1 2007 Bangkok JUD bronze: half-lightweight -66 kg | |
| Vladimir Nazlymov | FEN | Olympics / Referee | 1968—1988 | 3–0–1 1970 Torino FEN gold: sabre team, bronze: sabre; 1973 Moskva FEN gold: sabre and sabre team | |
| Aurel Neagu | WRE | Olympics | 1980 | 0–0–1 1981 București WRE bronze: freestyle bantamweight -57 kg | |
| Dragoș Neagu | ROW | Olympics | 1988—1992 | 2–0–0 1987 Zagreb ROW gold: coxless pairs; 1989 Duisburg ROW gold: coxless pairs | |
| Lia Neal | SWM | Olympics | 2012—2016 | 1–0–0 2015 Gwangju SWI gold: 4×100 m freestyle relay | |
| György Nébald | FEN | Olympics | 1980—1992 | 0–2–0 1977 Sofia FEN silver: sabre team; 1979 Ciudad de México FEN silver: sabre team | |
| Rudolf Nébald | FEN | Olympics | 1980 | 0–1–0 1979 Ciudad de México FEN silver: sabre team | |
| Yelena Nechayeva | FEN | Olympics | 2004—2008 | 2–2–1 2001 Beijing FEN gold: sabre team; 2003 Daegu FEN silver: sabre and sabre team; 2005 İzmir FEN gold: sabre team, bronze: sabre | |
| Emilian Necula | GAR | Olympics | 1984 | 2–0–1 1981 București GYM gold: horizontal bar and team, bronze: rings | |
| Veronica Necula | ROW | Olympics | 1988—1992 | 1–1–0 1993 Buffalo ROW gold: quadruple sculls. silver: coxless fours | |
| Anastasiya Nedobiha | DIV | Olympics | 2016 | 1–0–0 2017 Taipei DIV gold: mixed synchronized platform | |
| Diego Negri | SAL | Olympics | 2000—2008 | 0–0–1 1999 Palma de Mallorca SAI bronze: Laser | |
| Iulia Negură | ATH | Olympics | 1996 | 2–0–0 1993 Buffalo ATH gold: 10000 m; 1995 Fukuoka ATH gold: 10000 m | |
| Nicolae Neguț | WRE | Olympics | 1968—1972 | 0–0–1 1973 Moskva WRE bronze: Greco-Roman light-heavyweight -90 kg | |
| Kathrin Neimke | ATH | Olympics | 1988—1996 | 0–1–0 1987 Zagreb ATH silver: shot put (competed for East Germany) | |
| Adam Nelson | ATH | Olympics | 2000—2008 | 0–1–0 1999 Palma de Mallorca ATH silver: shot put | |
| Carey Nelson | ATH | Olympics | 1988—1996 | 0–1–0 1985 Kobe ATH silver: 5000 m | |
| John Nelson | SWM | Olympics | 1964—1968 | 1–0–0 1967 Tokyo SWI gold: 4×200 m freestyle relay | |
| Van Nelson | ATH | Olympics | 1968 | 0–2–0 1967 Tokyo ATH silver: 5000 m and 10000 m | |
| Zsolt Nemcsik | FEN | Olympics | 2000—2008 | 1–1–0 1997 Catania FEN silver: sabre team; 1999 Palma de Mallorca FEN gold: sabre team | |
| Zoltán Nemere | FEN | Olympics | 1964—1968 | 2–1–0 1963 Porto Alegre FEN silver: épée team; 1965 Budapest FEN gold: épée and épée team | |
| Miklós Németh | ATH | Olympics / Closing Flagbearer | 1968—1980 | 1–0–0 1970 Torino ATH gold: javelin throw | |
| Zsolt Németh | ATH | Olympics | 1996—2000 | 1–0–0 1999 Palma de Mallorca ATH gold: hammer throw | |
| Zsolt Németh | FEN | Olympics | 1992 | 1–1–0 1985 Kobe FEN gold: foil team; 1989 Duisburg FEN silver: foil team | |
| Cornel Nemțoc | ROW | Olympics | 1996—2000 | 1–0–0 1993 Buffalo ROW gold: coxed fours | |
| Andrea Nencini | VVO | Olympics | 1976 | 1–0–0 1970 Torino VOL gold | |
| Margarita Nesterova | SWM | Olympics | 2012 | 2–0–1 2013 Kazan SWI gold: 4×100 m freestyle relay and 4×100 m medley relay (swam in heats only); 2015 Gwangju SWI bronze: 4×100 m freestyle relay | |
| Hein-Direck Neu | ATH | Olympics | 1968—1976 | 0–2–0 1967 Tokyo ATH silver: discus throw; 1970 Torino ATH silver: discus throw | |
| Nadine Neumann | SWM | Olympics | 1996 | 0–1–1 1995 Fukuoka SWI silver: 200 m breaststroke, bronze: 100 m breaststroke | |
| Kiley Neushul | WPO | Olympics | 2016 | 1–0–0 2017 Taipei WAP gold | |
| Larissa Nevierov | SAL | Olympics | 2000—2008 | 0–0–1 1999 Palma de Mallorca SAI bronze: Europe | |
| Maureen New | SWM | Olympics | 1984 | 0–0–1 1983 Edmonton SWI bronze: 4×100 m freestyle relay | |
| Brent Newdick | ATH | Olympics | 2012 | 0–1–1 2009 Beograd ATH silver: decathlon; 2013 Kazan ATH bronze: decathlon | |
| Joy Newman | DIV | Olympics | 1964 | 1–0–0 1965 Budapest DIV gold: platform | |
| Ng Yan Yee | DIV | Olympics | 2012—2020 | 0–0–1 2011 Shenzhen DIV bronze: team | |
| Patapol Ngernsrisuk | BDM | Olympics | 2004 | 2–0–0 2007 Bangkok BDM gold: doubles and team | |
| Quedjau Nhabali | JUD | Olympics | 2016—2020 | 0–0–1 2011 Shenzhen JUD bronze: team | |
| Ni Hong | FEN | Olympics | 2008 | 0–0–1 2009 Beograd FEN bronze: sabre | |
| Ousmane Niang | ATH | Olympics | 2000 | 0–0–1 1999 Palma de Mallorca ATH bronze: 4×400 m relay | |
| Günther Nickel | ATH | Olympics | 1972 | 0–1–0 1970 Torino ATH silver: 110 m hurdles | |
| Christian Nicolau | ATH | Olympics | 1968 | 0–0–1 1970 Torino ATH bronze: 4×400 m relay | |
| Cristina Nicolau | ATH | Olympics | 2000 | 0–0–1 1997 Catania ATH bronze: long jump | |
| Wayde van Niekerk | ATH | Olympics / Opening Flagbearer | 2016—2024 | 0–0–1 2013 Kazan ATH bronze: 4×400 m relay | |
| Ivan Nifontov | JUD | Olympics | 2012 | 0–0–1 2007 Bangkok JUD bronze: team | |
| Gabriel Nigon | FEN | Olympics | 1984 | 0–1–0 1981 București FEN silver: épée team | |
| Aleksey Nikanchikov | FEN | Olympics | 1964—1968 | 0–1–1 1965 Budapest FEN silver: épée team, bronze: épée | |
| Viktoriya Nikishina | FEN | Olympics | 2008 | 0–0–1 2003 Daegu FEN bronze: foil team | |
| Bohdan Nikishyn | FEN | Olympics / Opening Flagbearer | 2004—2020 | 1–0–0 2003 Daegu FEN gold: épée team | |
| Mandy Niklaus | FEN | Olympics | 1980 | 1–0–1 1979 Ciudad de México FEN gold: foil team, bronze: foil (competed as Mandy Dick) | |
| Volodymyr Nikolaichuk | SWM | Olympics | 1996—2004 | 1–1–2 2001 Beijing SWI silver: 4×100 m medley relay, bronze: 100 m backstroke; 2003 Daegu SWI gold: 4×100 m medley relay, bronze: 100 m backstroke | |
| Jelena Nikolić | VVO | Olympics | 2008—2016 | 0–1–0 2009 Beograd VOL silver | |
| Valentina Nikonova | FEN | Olympics | 1976 | 0–2–0 1973 Moskva FEN silver: foil and foil team | |
| Igor Nikulin | ATH | Olympics | 1992 | 0–0–2 1981 București ATH bronze: hammer throw (competed for the Soviet Union); 1985 Kobe ATH bronze: hammer throw (competed for West Germany) | |
| Alexandru Nilca | FEN | Olympics | 1976—1980 | 1–0–0 1977 Sofia FEN gold: sabre team | |
| Issam Nima | ATH | Olympics / Non-starter | 2008—2012 | 0–1–0 2005 İzmir ATH silver: long jump | |
| Yevheniya Nimchenko-Dovhodko | ROW | Olympics | 2016—2024 | 1–1–1 2013 Kazan ROW bronze: lightweight coxless fours; 2015 Gwangju ROW gold: lightweight coxless fours, silver: coxless pairs | |
| Luis Niño | DIV | Olympics | 1964—1968 | 0–1–0 1967 Tokyo DIV silver: 3 m springboard | |
| Kazuhiro Ninomiya | JUD | Olympics | 1976 | 1–0–0 1967 Tokyo JUD gold: half-middleweight -93 kg | |
| Violeta Ninova-Yordanova | ROW | Olympics | 1988—1992 | 0–1–0 1987 Zagreb ROW silver: quadruple sculls (competed as Violeta Ninova) | |
| Ljudmila Ninova | ATH | Olympics | 1992—1996 | 0–1–0 1987 Zagreb ATH silver: long jump (competed for Bulgaria) | |
| Rangsiya Nisaisom | TKW | Olympics | 2012 | 0–0–1 2015 Gwangju TKW bronze: featherweight -57 kg | |
| Darko Nišavić | WRE | Olympics / Non-starter / Referee | 1972—2004 | 0–2–0 1973 Moskva WRE silver: Greco-Roman light-heavyweight -90 kg; 1977 Sofia WRE silver: Greco-Roman light-heavyweight -90 kg | |
| Daisuke Nishikawa | GAR | Olympics | 1988—1992 | 0–3–1 1991 Sheffield GYM silver: all-around and team, bronze: rings; 1993 Buffalo GYM silver: floor | |
| Ayaka Nishimura | HOC | Olympics | 2016 | 0–0–1 2013 Kazan HOK bronze |