or
Player positions provided by the CFL and errors are known to exist
| Name | Position | Regular GP | # of Seasons (Years) | Also played for |
|---|---|---|---|---|
| MacCready, Derek | DE, DL | 53 | 4 (1989–1991, 1993) | EDM, HAM, OTT |
| MacDonald, John | SB | 6 | 2 (1989–1990) | |
| MacDougall, Bill | G | 5 | 1 (1961) | CGY, HAM |
| MacMillan, Ivan | K | 24 | 3 (1973–1975) | OTT, SSK, TOR |
| MacNeil, John | DT | 11 | 2 (1992–1993) | |
| Mackie, David | FB | 28 | 2 (2018–2019) | |
| Maddy, Luther | DT | 1 | 1 (2017) | |
| Maeva, David | LB | 24 | 2 (1996–1997) | LV, WPG |
| Magrum, Francis “Bud” | DE, DL | 31 | 2 (1973–1974) | |
| Mahmoudi, Hamid | DB | 9 | 2 (2010–2011) | |
| Major, Chris | DB | 31 | 3 (1990–1992) | CGY |
| Mallett, Martell | RB | 16 | 1 (2009) | CGY, HAM |
| Malone, Art | DB | 7 | 1 (1989) | CGY |
| Mantyka, Cory | G, OL, OT, T | 202 | 13 (1993–2005) | |
| Marasco, Mike | RB | 27 | 3 (1990–1992) | |
| Marinovich, Todd | QB | 18 | 1 (1999) | |
| Marriott, Sean | LB | 6 | 1 (1996) | OTT |
| Marsh, Dante | CB, DB | 181 | 11 (2004–2014) | |
| Marshall, Andrew | DL | 1 | 1 (2013) | OTT |
| Martin, Mike | DE, DT, LB | 109 | 7 (1962–1968) | |
| Martin, Manny | DB | 10 | 1 (2002) | OTT |
| Martin, Kennard | SB | 9 | 1 (1990) | CGY |
| Martin, Nelson Jr. | DB, S | 116 | 7 (1981–1987) | |
| Martinello, Marty | G | 25 | 2 (1958–1959) | BRNT, HAM, MTL, TOR |
| Martino, Tony | K | 32 | 4 (1988, 1990, 2001–2002) | CGY, OTT, TOR |
| Martinsen, Grant | DB | 3 | 1 (1967) | |
| Masters, Norm | T | 15 | 1 (1956) | |
| Matechuk, Jordan | LS | 25 | 2 (2013–2014) | HAM, WPG |
| Matherne, Wayne | DB | 57 | 4 (1971–1974) | EDM |
| Mathieson, Dave | QB | 1 | 1 (1967) | |
| Mathis, Mark | DB | 4 | 1 (1992) | EDM |
| Maurer, Mike | RB | 24 | 2 (2000–2001) | EDM, OTT, SSK |
| Mayo, Lyneil | LB | 8 | 1 (1991) | |
| Mazur, Johnny | QB | 12 | 1 (1954) | |
| Mazur, Walt | T | 4 | 1 (1957) | |
| Mazzoli, Nick | WR | 6 | 1 (1997) | EDM, HAM, OTT |
| Mbaye, Khadim Cheickh | LB | 7 | 1 (2019) | MTL |
| McBride, Billy | DB | 6 | 2 (1983–1984) | OTT, SSK |
| McCallum, Paul | K, P | 152 | 12 (1993–1994, 2006–2014, 2016) | OTT, SSK |
| McCant, Keithen | QB | 13 | 1 (1995) | WPG |
| McCauley, Tango | OL | 1 | 1 (2004) | MTL, SSK |
| McClellion, Central | DB | 1 | 1 (2000) | |
| McCuaig, Scott | DE | 7 | 1 (2009) | HAM |
| McCullough, Dan | DE, DL | 72 | 4 (2008–2011) | |
| McDonald, Darnell | WR | 10 | 1 (2001) | CGY, WPG |
| McDonald, Gordie | C | 2 | 1 (1958) | |
| McDonald, Hamish | G | 5 | 1 (1957) | |
| McDonald, Mark | WR | 1 | 1 (1978) | CGY, SSK, TOR, WPG |
| McDonald, Tevin | DB | 1 | 1 (2017) | |
| McDonough, Dan | LB | 19 | 2 (1975–1976) | EDM |
| McDowell, John | T | 33 | 3 (1967–1969) | |
| McDowell, Layne | G, OT, T | 84 | 7 (1972–1978) | |
| McEachern, Mike | DB | 1 | 1 (2009) | |
| McEachern, Ted | LB | 12 | 1 (1976) | SSK, TOR, WPG |
| McElrath, Nakoa | DB | 3 | 1 (2002) | |
| McEwan, Scott | QB | 12 | 1 (2002) | |
| McFadden, Marques | G | 15 | 1 (2004) | |
| McFarland, Jamarkus | DL | 1 | 1 (2015) | WPG |
| McField, Daaron | DT | 4 | 1 (2001) | EDM, HAM, WPG |
| McGarva, Matt | DB, S | 8 | 2 (2013–2014) | |
| McGhee, Greg | QB | 10 | 1 (2015) | MTL, TOR |
| McGowen, Mel | LB | 3 | 1 (1979) | |
| McGrath, Joe Jr. | OL | 11 | 1 (2010) | EDM |
| McHale, Rick | G | 16 | 1 (1968) | |
| McInnis, Hugh | HB | 1 | 1 (1967) | |
| McKay-Loescher, Nautyn | DE, DL | 55 | 4 (2004–2006, 2009) | HAM |
| McKenzie, Anton | LB | 85 | 5 (2009–2013) | OTT, SSK |
| McKinlay, Neil | LB | 2 | 1 (2011) | WPG |
| McKinnis, Hugh Jr. | RB | 0 | 1 (1977) | CGY, OTT |
| McKnight, Matt | DB | 10 | 1 (2003) | CGY, TOR |
| McLaren, Rob | LB | 16 | 1 (1977) | EDM, HAM, WPG |
| McLellan, Don | LB | 1 | 1 (1976) | |
| McLennan, Ivan | DL | 18 | 1 (2018) | CGY, MTL |
| McLennan, Spencer | SB | 84 | 5 (1991–1995) | MTL, WPG |
| McLoughlin, Mark | K | 4 | 1 (2005) | CGY |
| McManus, Danny | QB | 53 | 3 (1993–1995) | CGY, EDM, HAM, WPG |
| McNaughton, Jim | TE | 4 | 1 (1964) | SSK |
| McNeel, Dave | LB | 5 | 2 (1983–1984) | EDM |
| McNerney, Pat | OT | 13 | 2 (1996–1997) | EDM, HAM, WPG |
| Melin, Mel | QB | 4 | 4 (1962–1965) | |
| Meltzer, Len | HB | 11 | 1 (1954) | WPG |
| Menard, David | DE, DL | 94 | 6 (2014–2019) | |
| Mero, Joe | DB | 9 | 1 (1992) | OTT, SHR, TOR |
| Messam, Jerome | RB | 17 | 1 (2010) | CGY, EDM, MTL, SSK |
| Miles, Barron | S | 88 | 5 (2005–2009) | MTL |
| Miles, Warner | G | 12 | 1 (1983) | HAM, OTT, TOR |
| Miller, Don | LB | 6 | 2 (1991–1992) | |
| Miller, Kirby | G | 1 | 1 (1955) | |
| Miller, Fred | T | 1 | 1 (1957) | HAM |
| Miller, Martin | DB | 1 | 1 (1997) | |
| Miller, Peter | LB | 9 | 1 (1997) | SSK, TOR |
| Millington, Kojo | LB | 2 | 1 (2002) | |
| Millington, Sean | FB, HB, RB | 148 | 10 (1991–1997, 2000–2002) | EDM, TOR, WPG |
| Mills, Jim | OT, T | 129 | 9 (1986–1993, 1995) | OTT |
| Milton, Keavon | OL | 2 | 1 (2017) | |
| Mimbs, Robert | RB | 5 | 2 (1992–1993) | SSK, WPG |
| Mingo, Gino | DL | 15 | 2 (1988–1989) | |
| Minter, Zach | DL | 10 | 2 (2015–2016) | CGY, SSK |
| Mitchell, Bill | C | 35 | 3 (1966–1968) | EDM, TOR |
| Mitchell, Dennis | DB | 5 | 1 (2007) | |
| Mitchell, Doug | C | 3 | 1 (1960) | |
| Mitchell, Gordie | C, G, T | 112 | 8 (1955–1962) | |
| Mitchell, Khalif | DT | 44 | 4 (2010–2012, 2014) | TOR |
| Mitchell, Mack | DE | 0 | 1 (1980) | |
| Mitchener, Jim | HB | 13 | 2 (1956–1957) | CGY, MTL |
| Mock, Chad | WR | 3 | 1 (2007) | |
| Mokofisi, Filipo | LB | 1 | 1 (1989) | |
| Montana, Denis | RB, SB | 32 | 2 (2000–2001) | CGY, EDM, MTL, OTT, TOR |
| Moore, Billy | HB | 11 | 1 (1966) | |
| Moore, Freddie | OT, T | 22 | 2 (2003–2004) | OTT |
| Moore, Mack | DT | 92 | 6 (1981–1984, 1988–1989) | |
| Moore, Nick | SB, WR | 45 | 5 (2011–2013, 2016–2017) | WPG |
| Moore, Sam | WR | 4 | 1 (1988) | |
| Moore, Wayne | RB | 25 | 2 (2018–2019) | MTL |
| Moorhead, Don | QB | 69 | 5 (1971–1975) | |
| Morehouse, Ron | LB | 60 | 4 (1979–1982) | TOR |
| Moretto, Rob | LB | 36 | 3 (1987–1989) | |
| Morgan, Maurice | WR | 1 | 1 (2017) | |
| Moro, Tony | E, TE | 32 | 2 (1974–1975) | TOR |
| Morrah, Cam | R | 2 | 1 (2015) | |
| Morris, Ron | DB, HB | 33 | 3 (1963–1965) | CGY, TOR |
| Mortensen, Todd | QB | 1 | 1 (2006) | |
| Moseley, Wayne | HB | 11 | 1 (1975) | |
| Moss, LeRoy | RB | 2 | 1 (1977) | EDM |
| Moton, Dave | E | 16 | 1 (1966) | |
| Mrabure-Ajufo, Ese | DL | 6 | 1 (2015) | CGY, SSK |
| Mrkonic, George | T | 1 | 1 (1956) | |
| Muamba, Cauchy | DB | 36 | 3 (2010–2012) | EDM, MTL, WPG |
| Muhammad, Mustafah | DB | 17 | 1 (1998) | WPG |
| Mulhern, Brian | HB | 19 | 2 (1954, 1956) | CGY, WPG |
| Munsey, Bill | DB, FB, HB | 76 | 5 (1963–1967) | |
| Murdock, Geary | T | 1 | 1 (1975) | CGY |
| Murphy, Brian | DT | 1 | 1 (1968) | |
| Murphy, Cal | HB | 8 | 1 (1956) | |
| Murphy, Llewellyn “Yo” | SB, WR | 19 | 4 (1993–1996) | OTT, SSK |
| Murphy, Rob | OL | 49 | 3 (2006–2008) | TOR |
| Murray, Andrew | SB | 21 | 2 (1988–1989) | OTT, TOR |
| Murray, Craig | DB, HB, S | 41 | 3 (1967–1969) | |
| Murray, Richard | DE | 38 | 4 (1979–1982) | |
| Murray-Lawrence, Shaq | RB | 39 | 3 (2015–2017) | MTL |
| Musso, Johnny Jr. | RB | 34 | 3 (1972–1974) | |
| Myddelton, Steve | OL | 12 | 1 (2013) | CGY, EDM, HAM |
| Myers, Jerel | WR | 15 | 1 (2005) | |
| Myhedyn, Mark | WR | 1 | 1 (1986) | |
| Myles, Reggie | DB | 14 | 1 (2008) | |
| “M” player count: 145 | ||||