Hide designers with less than 10 entries
Include non-championship races
| No | Designer | Races | Active Years |
|---|
| 163 | Maddock, Owen | 87 |
1950, 1952–1965 |
| 164 | Marabini/Mark Tatham, Paolo | 41 |
2016–2017 |
| 165 | Marabini/Matteo Piraccini, Paolo | 19 |
2015 |
| 166 | Marchetti, Carlo | 12 |
1950–1951 |
| 167 | Marcus, Bernie | 26 |
1989–1990 |
| 168 | Marelli, Gianni | 14 |
1990 |
| 169 | Marmiroli, Luigi | 25 |
1984–1985 |
| 170 | Marquart, Jo | 18 |
1969–1971 |
| 171 | Marshall, Rob | 169 |
2007–2011, 2014–2017 |
| 172 | Martens, Jean-Claude | 20 |
2012 |
| 173 | Martini, Renato | 7 |
1978 |
| 174 | Maserati, Bindo | 7 |
1951–1953, 1958 |
| 175 | Maserati, Ernesto | 12 |
1950–1953, 1958 |
| 176 | Maserati, Ettore | 7 |
1951–1953, 1958 |
| 177 | Massimino, Alberto | 32 |
1950–1956, 1961–1963 |
| 178 | McCall, Alan | 2 |
1973 |
| 179 | McCool, Peter | 39 |
2006–2008 |
| 180 | McKiernan, Doug | 156 |
2010–2017 |
| 181 | McQuilliam, John | 200 |
2002–2007, 2012–2016 |
| 182 | Mekies, Laurent | 166 |
2006–2014 |
| 183 | Mertens, Alan | 15 |
1981 |
| 184 | Merzario, Arturo | 20 |
1978–1979 |
| 185 | Michael, Sam | 127 |
2005–2011 |
| 186 | Migeot, Jean-Claude | 273 |
1983–1986, 1989–2001 |
| 187 | Mimura, Kenji | 8 |
1974–1976 |
| 188 | Morris, Matt | 98 |
2013–2017 |
| 189 | Morris, Vic | 7 |
1980 |
| 190 | Mullarkey, Seamus | 195 |
1997, 1999–2006, 2011, 2016 |
| 191 | Murphy, Chris | 154 |
1985–1994 |
| 192 | Murray, Gordon | 278 |
1973–1986, 1988–1992 |
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