Known as British Empire Games (1930-1950), British Empire and Commonwealth Games (1954-1966), British Commonwealth Games (1970-1974), and Commonwealth Games (1978-present). An Inter-Empire Championship was held as a part of the Festival of Empire and can be counted as forerunner.
Host cities:
| Athlete | Nation(s) | Sport(s) | Role(s) | Era | Notes |
|---|---|---|---|---|---|
| Hannah McLean | SWM | Olympics | 2004 | 0–0–1 2006 Melbourne SWI bronze: 200 m backstroke | |
| Glenn McLeay | CTR | Olympics | 1992—1996 | 1–1–0 1990 Auckland CYC gold: 4000 m team pursuit; 1994 Victoria CYC silver: 10 miles scratch | |
| Sally McLellan-Pearson | ATH | Olympics | 2008—2012 | 2–0–1 2006 Melbourne ATH bronze: 4×100 m relay (competed as Sally McLellan); 2010 Delhi ATH gold: 100 m hurdles (competed as Sally Pearson); 2014 Glasgow ATH gold: 100 m hurdles (competed as Sally Pearson) | |
| Bob McLeod | CTR | Olympics | 1936 | 1–1–0 1934 London CYC gold: 10 miles scratch, silver: 1000 m time trial | |
| Mike McLeod | ATH | Olympics | 1980—1988 | 0–0–1 1978 Edmonton ATH bronze: 10000 m (competed for England) | |
| Jack McLoughlin | SWM | Olympics | 2016—2020 | 1–1–0 2018 Gold Coast SWI gold: 1500 m freestyle, silver: 400 m freestyle | |
| Jack McLoughlin | SWM | Olympics | 2016—2020 | 1–1–0 2018 Gold Coast SWI gold: 1500 m freestyle, silver: 400 m freestyle | |
| Gary McMahon | SHO | Olympics | 1960—1964 | 0–0–1 1966 Kingston SHO bronze: 50 m free pistol | |
| Karri McMahon | HOC | Olympics | 2016 | 1–1–0 2014 Glasgow HOK gold; 2018 Gold Coast HOK silver | |
| Karri McMahon | HOC | Olympics | 2016 | 1–1–0 2014 Glasgow HOK gold; 2018 Gold Coast HOK silver | |
| Drew McMaster | ATH | Olympics | 1980 | 1–0–1 1978 Edmonton ATH gold: 4×100 m relay (competed for Scotland); 1982 Brisbane ATH bronze: 4×100 m relay (competed for Scotland) | |
| Keryn McMaster | SWM | Olympics | 2016 | 0–0–1 2014 Glasgow SWI bronze: 400 m medley | |
| Kate McMeeken-Ruscoe | BKB | Olympics | 2008 | 0–1–0 2006 Melbourne BAS silver | |
| Kate McMeeken-Ruscoe | BKB | Olympics | 2008 | 0–1–0 2006 Melbourne BAS silver | |
| Bruce McMillan | SHO | Olympics | 1972 | 0–0–1 1974 Christchurch SHO bronze: 25 m rapid fire pistol | |
| Denis McNamara | WRE | Olympics | 1964 | 0–0–3 1962 Perth WRE bronze: freestyle heavyweight +97 kg (competed for England); 1966 Kingston WRE bronze: freestyle heavyweight +97 kg (competed for England); 1970 Edinburgh WRE bronze: freestyle super-heavyweight +100 kg (competed for England) | |
| Gerry McNamee | SWM | Olympics | 1952 | 0–1–0 1954 Vancouver SWI silver: 4×220 yards freestyle | |
| Calum McNeil | WRE | Olympics | 1992 | 0–0–1 1994 Victoria WRE bronze: freestyle welterweight -74 kg (competed for Scotland) | |
| Pablo McNeil | ATH | Olympics | 1964—1968 | 0–1–0 1966 Kingston ATH silver: 4×110 yards relay | |
| Louise McPaul-Currey | ATH | Olympics | 1992—2000 | 2–0–0 1994 Victoria ATH gold: javelin throw (competed as Louise McPaul); 1998 Kuala Lumpur ATH gold: javelin throw (competed as Louise McPaul) | |
| Stephenie McPherson | ATH | Olympics / Closing Flagbearer | 2016—2024 | 3–0–1 2014 Glasgow ATH gold: 400 m and 4×400 m relay; 2018 Gold Coast gold: 4×400 m relay, bronze: 400 m | |
| Marjory McQuade | SWM | Olympics | 1948—1952 | 3–0–0 1950 Auckland SWI gold: 110 yards freestyle, 4×110 yards freestyle, and 3×110 yards medley | |
| Dick McTaggart | BOX | Olympics / Opening Flagbearer | 1956—1964 | 1–1–0 1958 Cardiff BOX gold: lightweight -60 kg (competed for Scotland); 1962 Perth BOX silver: light-welterweight -63.5 kg (competed for Scotland) | |
| Frank Meachem | BOX | Non-starter | 1928 | 1–0–0 1930 Hamilton BOX gold: featherweight -126 lb (57 kg) (competed for England) | |
| Gavin Meadows | SWM | Olympics | 2004 | 0–2–2 1998 Kuala Lumpur SWI silver: 4×200 m freestyle and 4×100 m medley, bronze: 100 m freestyle and 4×100 m freestyle (competed for England) | |
| Jenny Meadows | ATH | Olympics | 2008 | 0–1–0 2002 Manchester ATH silver: 4×400 m relay (ran in heats only) (competed for England) | |
| Aileen Meagher | ATH | Olympics / Non-starter | 1932—1936 | 1–3–1 1934 London ATH gold: 220-110-220-110 yards relay, silver: 220 yards and 110-220-110 yards relay; 1938 Sydney ATH silver: 110-220-110 yards relay, bronze: 220-110-220-110 yards relay | |
| Robyn Meagher | ATH | Olympics | 1992—1996 | 0–1–0 1994 Victoria ATH silver: 3000 m | |
| Alf Meakin | ATH | Olympics | 1964 | 1–0–0 1962 Perth ATH gold: 4×110 yards relay (competed for England) | |
| Anna Meares | CTR | Olympics / Opening Flagbearer | 2004—2016 | 5–2–1 2002 Manchester CYC bronze: sprint; 2006 Melbourne CYC gold: 500 m time trial, silver: sprint; 2010 Delhi CYC gold: 500 m time trial, sprint, and team sprint; 2014 Glasgow CYC gold: 500 m time trial, silver: sprint | |
| Chris Mears | DIV | Olympics | 2012—2016 | 2–0–0 2014 Glasgow DIV gold: synchronized springboard (competed for England); 2018 Gold Coast DIV gold: synchronized springboard (competed for England) | |
| Paul Medhurst | CTR | Olympics | 1976 | 0–0–1 1974 Christchurch CYC bronze: tandem (competed for New Zealand) | |
| Maurice Megennis | WLF | Olympics | 1952—1956 | 1–0–0 1954 Vancouver WLT gold: bantamweight -56 kg (competed for England) | |
| Ernie Meissner | DIV | Olympics | 1960 | 0–0–1 1962 Perth DIV bronze: 3 m springboard | |
| Rostand Barry Melaping | JUD | Olympics | 2004 | 0–0–1 2002 Manchester JUD bronze: middleweight -90 kg | |
| Lori Melien | SWM | Olympics | 1988 | 0–0–1 1990 Auckland SWI bronze: 4×100 m medley | |
| Karen Mellor | SWM | Olympics | 1988 | 0–1–0 1986 Edinburgh SWI silver: 4×200 m freestyle (competed for England) | |
| Steven Mellor | SWM | Olympics | 1992 | 0–0–1 1994 Victoria SWI bronze: 4×200 m freestyle (competed for England) | |
| David Mercer | WLF | Olympics | 1984—1988 | 0–1–0 1986 Edinburgh WLT silver: middle-heavyweight -90 kg (competed for England) | |
| Ken Meredith | GAR | Olympics | 1988 | 0–1–2 1990 Auckland GYM silver: parallel bars, bronze: rings and team | |
| Monday Merotohun | TTE | Olympics | 2004—2008 | 1–1–1 2002 Manchester TTN silver: team; 2006 Melbourne TTN gold: doubles, bronze: team | |
| Monday Merotohun | TTE | Olympics | 2004—2008 | 1–1–1 2002 Manchester TTN silver: team; 2006 Melbourne TTN gold: doubles, bronze: team | |
| John Merriman | ATH | Olympics | 1960 | 0–1–1 1958 Cardiff ATH silver: 6 miles (competed for Wales); 1962 Perth ATH bronze: 6 miles (competed for Wales) | |
| Olivia Merry | HOC | Olympics | 2016—2020 | 1–0–1 2014 Glasgow HOK bronze; 2018 Gold Coast HOK gold | |
| Olivia Merry | HOC | Olympics | 2016—2020 | 1–0–1 2014 Glasgow HOK bronze; 2018 Gold Coast HOK gold | |
| Glen Mervyn | ROW | Olympics | 1960 | 1–0–0 1958 Cardiff ROW gold: eights | |
| Adrian Metcalfe | ATH | Olympics | 1964 | 0–1–0 1962 Perth ATH silver: 4×440 yards relay (competed for England) | |
| Jack Metcalfe | ATH | Olympics | 1936 | 2–0–2 1934 London ATH gold: triple jump, bronze: long jump; 1938 Sydney ATH gold: triple jump, bronze: javelin throw | |
| Alain Metellus | ATH | Olympics | 1984 | 0–0–1 1986 Edinburgh ATH bronze: high jump | |
| Max Metzker | SWM | Olympics / Opening Flagbearer | 1976—1980 | 3–0–1 1978 Edmonton SWI gold: 1500 m freestyle and 4×200 m freestyle, bronze: 400 m freestyle; 1982 Brisbane SWI gold: 1500 m freestyle | |
| Darren Mew | SWM | Olympics | 2000—2004 | 0–2–2 1998 Kuala Lumpur SWI silver: 4×100 m medley, bronze: 100 m breaststroke (competed for England); 2002 Manchester SWI bronze: 50 m breaststroke (competed for England); 2006 Melbourne SWI silver: 50 m breaststroke (competed for England) | |
| Cam Meyer | CTR | Olympics | 2008 | 4–0–0 2010 Delhi CYC gold: 4000 m team pursuit, points race, and scratch race; 2018 Gold Coast CYC gold: individual time trial | |
| Cynthia Meyer | SHO | Olympics | 1996—2016 | 1–3–4 2002 Manchester SHO gold: trap, silver: double trap/pairs, bronze: double trap and trap/pairs; 2006 Melbourne SHO silver: trap/pairs and double trap/pairs, bronze: double trap; 2010 Delhi SHO bronze: trap/pairs | |
| Elana Meyer | ATH | Olympics | 1992—2000 | 0–1–0 1994 Victoria ATH silver: 10000 m | |
| Jasmine Mian | WRE | Olympics | 2016 | 0–0–1 2014 Glasgow WRE bronze: freestyle flyweight -48 kg | |
| Miao Miao | TTE | Olympics | 2000—2012 | 0–3–3 2002 Manchester TTN silver: team, bronze: doubles; 2006 Melbourne TTN silver: team, bronze: doubles; 2014 Glasgow TTN silver: doubles, bronze: team | |
| Miao Miao | TTE | Olympics | 2000—2012 | 0–3–3 2002 Manchester TTN silver: team, bronze: doubles; 2006 Melbourne TTN silver: team, bronze: doubles; 2014 Glasgow TTN silver: doubles, bronze: team | |
| Chantelle Michell-Newbery | DIV | Olympics | 2000—2008 | 2–3–0 1998 Kuala Lumpur DIV gold: 1 m springboard, silver: 3 m springboard (competed as Chantelle Michell); 2006 Melbourne DIV gold: synchronized platform, silver: 3 m springboard and platform (competed as Chantelle Newbery) | |
| Stacey Michelsen | HOC | Olympics | 2012—2020 | 1–1–1 2010 Delhi HOK silver; 2014 Glasgow HOK bronze; 2018 Gold Coast HOK gold | |
| Stacey Michelsen | HOC | Olympics | 2012—2020 | 1–1–1 2010 Delhi HOK silver; 2014 Glasgow HOK bronze; 2018 Gold Coast HOK gold | |
| Kim Mickle | ATH | Olympics | 2012—2016 | 1–1–0 2010 Delhi ATH silver: javelin throw; 2014 Glasgow ATH gold: javelin throw | |
| Barry Middleton | HOC | Olympics | 2004—2016 | 0–0–2 2014 Glasgow HOK bronze (competed for England); 2018 Gold Coast HOK bronze (competed for England) | |
| Barry Middleton | HOC | Olympics | 2004—2016 | 0–0–2 2014 Glasgow HOK bronze (competed for England); 2018 Gold Coast HOK bronze (competed for England) | |
| Ray Middleton | ATH | Olympics | 1964 | 0–1–0 1966 Kingston ATH silver: 20 miles walk (competed for England) | |
| Tim Mikkelson | RU7 | Olympics | 2016—2020 | 2–1–0 2010 Delhi RGS gold; 2014 Glasgow RGS silver; 2018 Gold Coast RGS gold | |
| Tim Mikkelson | RU7 | Olympics | 2016—2020 | 2–1–0 2010 Delhi RGS gold; 2014 Glasgow RGS silver; 2018 Gold Coast RGS gold | |
| Joel Milburn | ATH | Olympics | 2008 | 1–0–0 2010 Delhi ATH gold: 4×400 m relay | |
| Helen Miles | ATH | Olympics | 1988 | 0–0–1 1986 Edinburgh ATH bronze: 4×100 m relay (competed for Wales) | |
| Johnny Miles | ATH | Olympics | 1928—1932 | 0–0–1 1930 Hamilton ATH bronze: marathon | |
| Hannah Miley | SWM | Olympics | 2008—2016 | 2–1–1 2010 Delhi SWI gold: 400 m medley (competed for Scotland); 2014 Glasgow SWI gold: 400 m medley, bronze: 200 m medley (competed for Scotland); 2018 Gold Coast SWI silver: 400 m medley (competed for Scotland) | |
| Rosemary Milgate | SWM | Olympics | 1976 | 0–0–1 1974 Christchurch SWI bronze: 800 m freestyle | |
| Simon Militis | SWM | Olympics | 2000 | 0–0–1 2002 Manchester SWI bronze: 200 m backstroke (competed for England) | |
| David Millar | CRD | Olympics | 2000—2012 | 1–0–1 2010 Delhi CYC gold: individual time trial, bronze: road race (competed for Scotland) | |
| Ed Millard | WRE | Olympics | 1968 | 1–0–0 1970 Edinburgh WRE gold: heavyweight -100 kg | |
| Shaunae Miller-Uibo | ATH | Olympics / Opening Flagbearer | 2012—2024 | 1–0–0 2018 Gold Coast ATH gold: 200 m (competed as Shaunae Miller-Uibo) | |
| Shaunae Miller-Uibo | ATH | Olympics / Opening Flagbearer | 2012—2024 | 1–0–0 2018 Gold Coast ATH gold: 200 m (competed as Shaunae Miller-Uibo) | |
| Clayton Miller | SHO | Olympics | 1996 | 1–0–1 2002 Manchester SHO gold: skeet; 2006 Melbourne SHO bronze: skeet | |
| Graeme Miller | CRD/CTR | Olympics | 1984—1992 | 2–2–0 1982 Brisbane CYC silver: 4000 m team pursuit; 1986 Edinburgh CYC silver: team time trial; 1990 Auckland CYC gold: road race and team time trial | |
| Jim Miller | ATH | Olympics | 1996 | 0–0–1 1994 Victoria ATH bronze: pole vault | |
| Larrissa Miller | GAR | Olympics | 2012—2016 | 0–2–0 2014 Glasgow GYM silver: uneven bars and team | |
| Leigh Miller | ATH | Non-starter | 1928 | 1–0–0 1930 Hamilton ATH gold: 4×110 yards relay | |
| Leigh Miller | ATH | Non-starter | 1928 | 1–0–0 1930 Hamilton ATH gold: 4×110 yards relay | |
| Lennox Miller | ATH | Olympics / Opening Flagbearer | 1968—1972 | 1–1–0 1970 Edinburgh ATH gold: 4×100 m relay, silver: 100 m | |
| Nick Miller | ATH | Olympics | 2016—2020 | 1–1–0 2014 Glasgow ATH silver: hammer throw (competed for England); 2018 Gold Coast ATH gold: hammer throw (competed for England) | |
| Paul Miller | BOX | Olympics | 2000 | 1–0–0 2002 Manchester BOX gold: middleweight -75 kg | |
| Ramon Miller | ATH | Olympics | 2008—2012 | 0–1–1 2010 Delhi ATH bronze: 400 m; 2018 Gold Coast ATH silver: 4×400 m relay (ran in heats only) | |
| Ron Miller | ATH | Olympics | 1952 | 0–1–0 1954 Vancouver ATH silver: pole vault | |
| Scott Miller | SWM | Olympics | 1996 | 2–1–1 1994 Victoria SWI gold: 100 m butterfly and 4×100 m medley, silver: 200 m butterfly, bronze: 200 m backstroke | |
| Terry Milligan | BOX | Olympics | 1952 | 1–0–0 1958 Cardiff BOX gold: middleweight -75 kg (competed for Northern Ireland) | |
| Alice Mills | SWM | Olympics | 2004—2008 | 2–0–3 2002 Manchester SWI gold: 4×100 m freestyle; 2006 Melbourne SWI gold: 4×100 m freestyle, bronze: 50 m freestyle, 100 m freestyle, and 50 m butterfly | |
| Ernie Mills | CTR | Olympics | 1936 | 0–0–1 1938 Sydney CYC bronze: track time trail (competed for England) | |
| John Mills | SWM | Olympics | 1972—1976 | 0–2–1 1970 Edinburgh SWI bronze: 4×200 m freestyle (competed for England); 1978 Edmonton SWI silver: 100 m butterfly and 4×100 m medley (competed for England) | |
| Les Mills | ATH | Olympics / Opening Flagbearer | 1960—1972 | 1–3–1 1958 Cardiff ATH silver: discus throw; 1966 Kingston ATH gold: discus throw, silver: shot put; 1970 Edinburgh ATH silver: discus throw, bronze: shot put | |
| Stephen Milne | SWM | Olympics | 2016 | 0–1–2 2014 Glasgow SWI silver: 4×200 m freestyle (competed for Scotland); 2018 Gold Coast bronze: 4×100 m freestyle and 4×200 m freestyle (competed for Scotland) | |
| Lalita Milshina-Yauhleuskaya | SHO | Olympics | 1996—2016 | 6–2–2 2002 Manchester SHO gold: 10 m air pistol, 25 m sport pistol, and 25 m sport pistol/pairs, bronze: 10 m air pistol/pairs (competed as Lalita Yauhleuskaya for Australia); 2006 Melbourne SHO gold: 10 m air pistol, 25 m sport pistol, and 10 m air pistol/pairs, silver: 25 m sport pistol/pairs (competed as Lalita Yauhleuskaya for Australia); 2010 Delhi SHO silver: 25 m sport pistol/pairs (competed as Lalita Yauhleuskaya for Australia); 2014 Glasgow SHO bronze: 25 m sport pistol (competed as Lalita Yauhleuskaya for Australia) | |
| Freddie Milton | WPO | Olympics | 1936 | 0–1–0 1930 Hamilton SWI silver: 4×200 yards freestyle (competed for England) | |
| Dean Milwain | SWM | Olympics | 2008 | 1–0–0 2006 Melbourne SWI gold: 4×200 m freestyle (competed for England) | |
| Dimitris Minasidis | WLF | Olympics | 2008 | 1–0–0 2014 Glasgow WLT gold: featherweight -62 kg | |
| Gary Minihan | ATH | Olympics | 1984 | 0–1–1 1982 Brisbane ATH silver: 4×400 m relay, bronze: 400 m | |
| Mike Mintenko | SWM | Olympics | 2000—2004 | 0–2–1 2002 Manchester SWI silver: 100 m butterfly and 4×200 m freestyle, bronze: 4×100 m medley | |
| Arturo Miranda | DIV | Olympics | 2008 | 1–0–0 2006 Melbourne DIV gold: synchronized springboard | |
| Xavier Mirander | CRD/CTR | Olympics | 1972—1976 | 0–1–0 1974 Christchurch CYC silver: 1000 m match sprint | |
| Sania Mirza | TEN | Olympics | 2008—2020 | 0–1–1 2010 Delhi TEN silver: singles, bronze: doubles | |
| Sania Mirza | TEN | Olympics | 2008—2020 | 0–1–1 2010 Delhi TEN silver: singles, bronze: doubles | |
| Matt Mitcham | DIV | Olympics | 2008—2012 | 1–6–0 2010 Delhi DIV silver: 1 m springboard, platform, synchronized springboard, and synchronized platform; 2014 Glasgow DIV gold: synchronized platform, silver: 1 m springboard and synchronized springboard | |
| Claire Mitchell-Taverner | HOC | Olympics | 2000 | 1–0–0 1998 Kuala Lumpur HOK gold | |
| Ethan Mitchell | CTR | Olympics | 2012—2020 | 2–1–0 2010 Delhi CYC silver: team sprint; 2014 Glasgow CYC gold: team sprint; 2018 Gold Coast CYC gold: team sprint | |
| Glen Mitchell | CTR | Olympics | 1980 | 0–0–1 1978 Edmonton CYC bronze: 4000 m team pursuit (competed for England) | |
| Kathryn Mitchell | ATH | Olympics | 2012—2024 | 1–0–0 2018 Gold Coast ATH gold: javelin throw | |
| Kathryn Mitchell | ATH | Olympics | 2012—2024 | 1–0–0 2018 Gold Coast ATH gold: javelin throw | |
| Lauren Mitchell | GAR | Olympics | 2008—2012 | 4–3–0 2010 Delhi GYM gold: all-around, uneven bars, balance beam, and team, silver: floor; 2014 Glasgow GYM silver: floor and team | |
| Ray Mitchell | WRE | Olympics | 1956—1960 | 0–1–1 1958 Cardiff WRE bronze: freestyle heavyweight +87 kg; 1962 Perth WRE silver: freestyle heavyweight +97 kg | |
| Rick Mitchell | ATH | Olympics | 1976—1984 | 1–2–1 1978 Edmonton ATH gold: 400 m, bronze: 4×400 m relay; 1982 Brisbane ATH silver: 400 m and 4×400 m relay | |
| Roy Mitchell | ATH | Olympics | 1976 | 1–0–0 1978 Edmonton ATH gold: long jump (competed for England) | |
| Ryan Mitchell | SWM | Olympics | 1996—2000 | 0–1–0 1998 Kuala Lumpur SWI silver: 200 m breaststroke | |
| Stella Mitchell | SWM | Olympics | 1964 | 0–1–0 1966 Kingston SWI silver: 220 yards breaststroke (competed for England) | |
| Tom Mitchell | RU7 | Olympics | 2016—2020 | 0–0–1 2018 Gold Coast RGS bronze (competed for England) | |
| Tom Mitchell | RU7 | Olympics | 2016—2020 | 0–0–1 2018 Gold Coast RGS bronze (competed for England) | |
| Harry Mizler | BOX | Olympics | 1932 | 1–0–0 1930 Hamilton BOX gold: bantamweight -118 lb (53.52 kg) (competed for England) | |
| Russell Mockridge | CRD/CTR | Olympics | 1948—1952 | 2–1–0 1950 Auckland CYC gold: track time trail and Sprint 1000 m, silver: 4000 m individual pursuit | |
| Emma Moffatt | TRI | Olympics | 2008—2016 | 0–0–1 2014 Glasgow TRI bronze: mixed relay | |
| Emma Moffatt | TRI | Olympics | 2008—2016 | 0–0–1 2014 Glasgow TRI bronze: mixed relay | |
| Evans Mogaka | ATH | Olympics | 1972 | 0–0–1 1974 Christchurch ATH bronze: 3000 m steeplechase | |
| Ofentse Mogawane | ATH | Olympics | 2008—2012 | 0–1–0 2006 Melbourne ATH silver: 4×400 m relay | |
| Nur Suryani Mohamed Taibi | SHO | Olympics | 2012—2020 | 1–0–4 2006 Melbourne SHO bronze: 50 m small-bore rifle 3 positions and 50 m small-bore rifle 3 positions/pairs; 2010 Delhi SHO gold: 10 m air rifle/pairs, bronze: 10 m air rifle; 2014 Glasgow SHO bronze: 10 m air rifle | |
| Khotso Mokoena | ATH | Olympics | 2004—2016 | 1–1–0 2006 Melbourne ATH silver: triple jump; 2014 Glasgow ATH gold: triple jump | |
| Sione Molia | RU7 | Olympics | 2016—2024 | 1–0–0 2018 Gold Coast RGS gold | |
| Sione Molia | RU7 | Olympics | 2016—2024 | 1–0–0 2018 Gold Coast RGS gold | |
| Lorraine Moller | ATH | Olympics | 1984—1996 | 0–1–2 1982 Brisbane ATH bronze: 1500 m and 3000 m; 1986 Edinburgh ATH silver: marathon | |
| John Monckton | SWM | Olympics | 1956—1960 | 2–0–0 1958 Cardiff SWI gold: 110 yards backstroke and 4×110 yards medley | |
| Avard Moncur | ATH | Olympics | 2000—2008 | 0–0–1 2002 Manchester ATH bronze: 400 m | |
| Anil Mondal | WLF | Olympics | 1972—1976 | 0–1–0 1974 Christchurch WLT silver: flyweight -52 kg | |
| Steve Moneghetti | ATH | Olympics | 1988—2000 | 1–1–2 1986 Edinburgh ATH bronze: marathon; 1990 Auckland ATH silver: marathon; 1994 Victoria ATH gold: marathon; 1998 Kuala Lumpur ATH bronze: 10000 m | |
| Elizabeth Mongudhi | ATH | Olympics | 1996—2000 | 0–0–1 1998 Kuala Lumpur ATH bronze: marathon | |
| Ruth Moniz | GAR | Olympics | 1996 | 0–0–2 1994 Victoria GYM bronze: balance beam and team | |
| Kenrick Monk | SWM | Olympics | 2008—2012 | 2–1–1 2006 Melbourne SWI gold: 4×100 m medley (swam in heats only), bronze: 4×200 m freestyle; 2010 Delhi SWI gold: 4×200 m freestyle, silver: 200 m freestyle | |
| Carol Montgomery | ATH/TRI | Olympics / Non-starter | 2000—2004 | 1–0–0 2002 Manchester TRI gold: individual | |
| Carol Montgomery | ATH/TRI | Olympics / Non-starter | 2000—2004 | 1–0–0 2002 Manchester TRI gold: individual | |
| Anne Montminy | DIV | Olympics | 1992—2000 | 1–0–1 1994 Victoria DIV gold: platform; 1998 Kuala Lumpur DIV bronze: platform | |
| Amantle Montsho | ATH | Olympics / Opening Flagbearer / Closing Flagbearer | 2004—2020 | 2–0–1 2010 Delhi ATH gold: 400 m; 2018 Gold Coast ATH gold: 400 m, bronze: 4×400 m relay | |
| Harold Moody | ATH | Olympics | 1948 | 0–1–0 1950 Auckland ATH silver: shot put (competed for England) | |
| Ashleigh Moolman-Pasio | CRD | Olympics | 2012—2024 | 0–0–1 2014 Glasgow CYC bronze: road race | |
| Dave Moorcroft | ATH | Olympics | 1976—1984 | 2–0–0 1978 Edmonton ATH gold: 1500 m (competed for England); 1982 Brisbane ATH gold: 5000 m (competed for England) | |
| Aston Moore | ATH | Olympics | 1976 | 0–0–2 1978 Edmonton ATH bronze: triple jump (competed for England); 1982 Brisbane ATH bronze: triple jump (competed for England) | |
| Audrey Moore | SWM | Olympics | 1984 | 0–0–1 1982 Brisbane SWI bronze: 100 m backstroke | |
| David Moore | SHO | Olympics | 2000—2008 | 1–4–1 1998 Kuala Lumpur SHO silver: 50 m free pistol/pairs; 2002 Manchester SHO silver: 50 m free pistol/pairs and 25 m centre fire pistol/pairs; 2006 Melbourne SHO gold: 50 m free pistol/pairs, silver: 25 m standard pistol/pairs, bronze: 10 m air pistol/pairs | |
| Graeme Moore | SWM | Olympics | 2012 | 0–0–1 2010 Delhi SWI bronze: 4×100 m freestyle | |
| Willi Moore | CTR | Olympics | 1972 | 1–1–0 1974 Christchurch CYC gold: 4000 m team pursuit, silver: 4000 m individual pursuit (competed for England) | |
| Paul Moorfoot | SWM | Olympics | 1980 | 0–0–1 1978 Edmonton SWI bronze: 200 m backstroke | |
| Adrian Moorhouse | SWM | Olympics | 1984—1992 | 3–4–1 1982 Brisbane SWI gold: 100 m breaststroke, silver: 4×100 m medley, bronze: 200 m breaststroke (competed for England); 1986 Edinburgh SWI gold: 200 m breaststroke, silver: 100 m breaststroke and 4×100 m medley (competed for England); 1990 Auckland SWI gold: 100 m breaststroke, silver: 4×100 m medley (competed for England) | |
| Stephanie Moorhouse | GAR | Olympics | 2004 | 1–0–0 2002 Manchester GYM gold: team | |
| Thabiso Moqhali | ATH | Olympics | 1992—2000 | 1–0–0 1998 Kuala Lumpur ATH gold: marathon | |
| Karen Moras | SWM | Olympics | 1968—1972 | 3–0–0 1970 Edinburgh SWI gold: 200 m freestyle, 400 m freestyle, and 800 m freestyle | |
| John Morbey | ATH | Olympics | 1964 | 0–1–0 1966 Kingston ATH silver: long jump (competed for Bermuda) | |
| Lucette Moreau | ATH | Olympics | 1976 | 0–0–1 1978 Edmonton ATH bronze: discus throw | |
| Bob Morgan | DIV | Olympics | 1984—1996 | 1–1–1 1986 Edinburgh DIV bronze: platform (competed for Wales); 1990 Auckland DIV gold: platform (competed for Wales); 1994 Victoria DIV silver: platform (competed for Wales) | |
| Dave Morgan | WLF | Olympics | 1984—1992 | 9–3–0 1982 Brisbane WLT gold: lightweight -67.5 kg (competed for Wales); 1986 Edinburgh WLT gold: light-heavyweight -82.5 kg (competed for Wales); 1990 Auckland WLT light-heavyweight -82.5 kg gold: snatch, clean & jerk, and total (competed for Wales); 1994 Victoria WLT middleweight -76 kg gold: snatch and total, silver: clean & jerk (competed for Wales); 1998 Kuala Lumpur WLT middleweight -77 kg silver: snatch (competed for England); 2002 Manchester WLT middleweight -77 kg gold: clean & jerk and total, silver: snatch (competed for Wales) | |
| David Morgan | SWM | Olympics | 2016—2020 | 1–1–0 2018 Gold Coast SWI gold: 4×100 m medley (swam in heats only), silver: 200 m butterfly | |
| David Morgan | SWM | Olympics | 2016—2020 | 1–1–0 2018 Gold Coast SWI gold: 4×100 m medley (swam in heats only), silver: 200 m butterfly | |
| Dinsdale Morgan | ATH | Olympics | 1996—2000 | 1–0–0 1998 Kuala Lumpur ATH gold: 400 m hurdles | |
| Jason Morgan | ATH | Olympics | 2012 | 0–0–1 2014 Glasgow ATH bronze: discus throw | |
| Keith Morgan | JUD | Olympics | 1996—2008 | 0–1–0 2002 Manchester JUD silver: middleweight -90 kg | |
| Kelly Morgan | BDM | Olympics | 1996—2004 | 1–0–0 1998 Kuala Lumpur BDM gold: singles (competed for Wales) | |
| Sandra Morgan | SWM | Olympics | 1956—1960 | 1–0–0 1958 Cardiff SWI gold: 4×110 yards freestyle | |
| Scott Morgan | GAR | Olympics | 2016 | 2–3–2 2014 Glasgow GYM gold: vault and rings, silver: floor, bronze: team; 2018 Gold Coast GYM silver: floor and team, bronze: rings | |
| Tony Morgan | WLF | Olympics | 1992 | 0–0–1 1998 Kuala Lumpur WLT lightweight -69 kg bronze: snatch (competed for Wales) | |
| Vernon Morgan | ATH | Olympics | 1928 | 0–0–1 1930 Hamilton ATH bronze: 1.166 mi steeplechase (competed for England) | |
| Janet Morin | GAR | Olympics | 1992 | 1–0–0 1990 Auckland GYM gold: team | |
| Kay Morley-Brown | ATH | Olympics | 1992 | 1–0–0 1990 Auckland ATH gold: 100 m hurdles (competed as Kay Morley for Wales) | |
| Erica Morningstar | SWM | Olympics | 2008—2012 | 0–0–2 2006 Melbourne SWI bronze: 4×100 m freestyle and 4×100 m medley | |
| Gerry Moro | ATH | Olympics | 1964—1972 | 0–0–2 1966 Kingston ATH bronze: pole vault and decathlon | |
| Devon Morris | ATH | Olympics | 1984—1992 | 0–0–1 1990 Auckland ATH bronze: 4×400 m relay | |
| Ian Morris | ATH | Olympics / Opening Flagbearer | 1988—1992 | 0–0–1 1994 Victoria ATH bronze: 4×400 m relay | |
| Nicola Morris | JUD | Olympics | 1992 | 0–0–1 1990 Auckland JUD bronze: open class | |
| Price Morris | WLF | Olympics | 1972 | 0–0–1 1970 Edinburgh WLT bronze: heavyweight -110 kg | |
| Una Morris | ATH | Olympics | 1964—1972 | 0–0–2 1966 Kingston ATH bronze: 440 yards and 4×110 yards relay | |
| Pat Morton | WRE | Olympics | 1948 | 1–0–0 1950 Auckland WRE gold: freestyle light-heavyweight -87 kg | |
| Stephanie Morton | CTR | Olympics | 2016 | 4–2–0 2014 Glasgow CYC gold: sprint, silver: 500 m time trial; 2018 Gold Coast CYC gold: sprint, sprint team, and Keirin, silver: 500 m time trial | |
| Anthony Mosse | SWM | Olympics | 1984—1988 | 2–1–1 1986 Edinburgh SWI gold: 200 m butterfly, silver: 100 m butterfly; 1990 Auckland SWI gold: 200 m butterfly, bronze: 4×200 m freestyle | |
| Cydonie Mothersill | ATH | Olympics / Non-starter / Opening Flagbearer | 1996—2012 | 1–0–0 2010 Delhi ATH gold: 200 m | |
| Wendell Mottley | ATH | Olympics / Opening Flagbearer | 1964 | 2–0–0 1966 Kingston ATH gold: 440 yards and 4×440 yards relay | |
| Craig Mottram | ATH | Olympics | 2000—2012 | 0–1–0 2006 Melbourne ATH silver: 5000 m | |
| Stephen Mowlam | HOC | Olympics / Non-starter | 2004—2008 | 1–0–0 2006 Melbourne HOK gold | |
| Stephen Mowlam | HOC | Olympics / Non-starter | 2004—2008 | 1–0–0 2006 Melbourne HOK gold | |
| Samukeliso Moyo | ATH | Olympics | 2000 | 0–0–1 1998 Kuala Lumpur ATH bronze: 5000 m | |
| Lyton Mphande | BOX | Olympics | 1988 | 0–0–1 1986 Edinburgh BOX bronze: lightweight -60 kg | |
| Rebecca Muambo | WRE | Olympics | 2016 | 0–0–1 2014 Glasgow WRE bronze: freestyle flyweight -48 kg | |
| Lori-Ann Muenzer | CTR | Olympics | 2000—2004 | 0–1–2 1998 Kuala Lumpur CYC bronze: sprint; 2002 Manchester CYC silver: sprint, bronze: 500 m time trial | |
| Jo Muggeridge | BDM | Olympics | 1992—1996 | 2–0–0 1994 Victoria BDM gold: doubles and team mixed (competed for England) | |
| Shabbir Muhammad | HOC | Olympics | 2004 | 0–1–1 2002 Manchester HOK bronze; 2006 Melbourne HOK silver | |
| Shabbir Muhammad | HOC | Olympics | 2004 | 0–1–1 2002 Manchester HOK bronze; 2006 Melbourne HOK silver | |
| Carline Muir | ATH | Olympics | 2008—2016 | 0–0–1 2010 Delhi ATH bronze: 4×400 m relay | |
| Danish Mujtaba | HOC | Olympics | 2012—2016 | 0–2–0 2010 Delhi HOK silver; 2014 Glasgow HOK silver | |
| Danish Mujtaba | HOC | Olympics | 2012—2016 | 0–2–0 2010 Delhi HOK silver; 2014 Glasgow HOK silver | |
| Mbulaeni Mulaudzi | ATH | Olympics / Opening Flagbearer | 2004—2008 | 1–0–0 2002 Manchester ATH gold: 800 m | |
| Gael Mulhall-Martin | ATH | Olympics | 1980—1984 | 3–3–0 1978 Edmonton ATH gold: shot put, silver: discus throw; 1982 Brisbane ATH silver: shot put and discus throw; 1986 Edinburgh ATH gold: shot put and discus throw | |
| Angela Mullens | SWM | Olympics | 1992 | 1–0–0 1990 Auckland SWI gold: 4×100 m freestyle | |
| Heleen Muller | SWM | Olympics | 1996—2000 | 0–2–0 2002 Manchester SWI silver: 100 m freestyle and 4×100 m medley | |
| Vincent Mumo | ATH | Olympics | 2004—2012 | 0–1–0 2010 Delhi ATH silver: 4×400 m relay | |
| Kaliswaran Muniandy | HOC | Olympics | 1996 | 0–1–0 1998 Kuala Lumpur HOK silver |