| Name | Country | Years | Starts | Wins | Championships |
|---|---|---|---|---|---|
| Q Ma | China | 0 | 0 | 0 | |
| M MacDowel | Great Britain | 1957 | 1 | 0 | 0 |
| H MacKay-Fraser | United States | 1957 | 1 | 0 | 0 |
| B Mackey | United States | 1951 | 1 | 0 | 0 |
| L Macklin | Great Britain | 1952-1955 | 13 | 0 | 0 |
| D Magee | Great Britain | 1975 | 1 | 0 | 0 |
| A Maggs | South Africa | 1961-1965 | 26 | 0 | 0 |
| M Magill | United States | 1957-1959 | 3 | 0 | 0 |
| U Maglioli | Italy | 1953-1957 | 10 | 0 | 0 |
| J Magnussen | Denmark | 1995,1997-1998 | 25 | 0 | 0 |
| K Magnussen | Denmark | 2014,2016-2020,2022-2024 | 177 | 0 | 0 |
| G Mairesse | France | 1950-1951 | 3 | 0 | 0 |
| W Mairesse | Belgium | 1960-1963 | 12 | 0 | 0 |
| P Maldonado | Venezuela | 2011-2015 | 94 | 1 | 0 |
| Z Maloney | Barbados | 0 | 0 | 0 | |
| N Mansell | Great Britain | 1980-1992,1994-1995 | 187 | 31 | 1 |
| S Mantovani | Italy | 1953-1955 | 7 | 0 | 0 |
| J Mantz | United States | 1953 | 1 | 0 | 0 |
| R Manzon | France | 1950-1956 | 28 | 0 | 0 |
| R Marciello | Italy | 0 | 0 | 0 | |
| O Marimon | Argentina | 1951,1953-1954 | 11 | 0 | 0 |
| A Markelov | Russian Federation | 0 | 0 | 0 | |
| H Marko | Austria | 1971-1972 | 9 | 0 | 0 |
| T Marques | Brazil | 1996-1997,2001 | 24 | 0 | 0 |
| L Marr | Great Britain | 1954-1955 | 2 | 0 | 0 |
| T Marsh | Great Britain | 1957-1958,1961 | 4 | 0 | 0 |
| E Martin | France | 1950 | 2 | 0 | 0 |
| P Martini | Italy | 1985,1988-1995 | 118 | 0 | 0 |
| J Mass | Germany | 1973-1980,1982 | 104 | 1 | 0 |
| F Massa | Brazil | 2002,2004-2017 | 266 | 11 | 0 |
| N Matsushita | Japan | 0 | 0 | 0 | |
| M May | Switzerland | 1961 | 2 | 0 | 0 |
| T Mayer | United States | 1962 | 1 | 0 | 0 |
| N Mazepin | Russian Federation | 2021 | 20 | 0 | 0 |
| F Mazet | France | 1971 | 1 | 0 | 0 |
| G Mazzacane | Argentina | 2000-2001 | 21 | 0 | 0 |
| K McAlpine | Great Britain | 1952-1953,1955 | 7 | 0 | 0 |
| P McCarthy | Great Britain | 1992 | 0 | 0 | 0 |
| E McCoy | United States | 1953-1954 | 2 | 0 | 0 |
| J McDowell | United States | 1950-1952 | 3 | 0 | 0 |
| J McGrath | United States | 1950-1955 | 6 | 0 | 0 |
| B McGuire | Australia | 0 | 0 | 0 | |
| B McLaren | New Zealand | 1958-1970 | 100 | 4 | 0 |
| A McNish | Great Britain | 2002 | 15 | 0 | 0 |
| G McRae | New Zealand | 1973 | 1 | 0 | 0 |
| J McWithey | United States | 1959-1960 | 2 | 0 | 0 |
| C Menditeguy | Argentina | 1953,1955-1958,1960 | 10 | 0 | 0 |
| R Merhi | Spain | 2015 | 14 | 0 | 0 |
| H Merkel | Germany | 0 | 0 | 0 | |
| A Merzario | Italy | 1972-1979 | 56 | 0 | 0 |
| R Mieres | Argentina | 1953-1955 | 17 | 0 | 0 |
| F Migault | France | 1972,1974-1975 | 13 | 0 | 0 |
| J Miles | Great Britain | 1969-1970 | 12 | 0 | 0 |
| A Milhoux | Belgium | 1956 | 1 | 0 | 0 |
| C Miller | United States | 1951-1952 | 2 | 0 | 0 |
| G Mitter | Germany | 1963-1965 | 4 | 0 | 0 |
| S Modena | Italy | 1987-1992 | 70 | 0 | 0 |
| F Montagny | France | 2005-2006 | 7 | 0 | 0 |
| T Monteiro | Portugal | 2005-2006 | 37 | 0 | 0 |
| A Montermini | Italy | 1994-1996 | 20 | 0 | 0 |
| R Montgomerie-Charrington | Great Britain | 1952 | 1 | 0 | 0 |
| J Montoya | Colombia | 2001-2006 | 93 | 7 | 0 |
| G Morbidelli | Italy | 1990-1992,1994-1995,1997 | 67 | 0 | 0 |
| R Moreno | Brazil | 1987,1989-1992,1995 | 42 | 0 | 0 |
| D Morgan | Great Britain | 1975 | 1 | 0 | 0 |
| S Moser | Switzerland | 1967-1971 | 12 | 0 | 0 |
| B Moss | Great Britain | 0 | 0 | 0 | |
| S Moss | Great Britain | 1951-1961 | 66 | 16 | 0 |
| G Munaron | Italy | 1960 | 4 | 0 | 0 |
| D Murray | Great Britain | 1950-1952 | 4 | 0 | 0 |
| L Musso | Italy | 1953-1958 | 24 | 1 | 0 |
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