M
| Year | Nominee | Film |
|---|---|---|
| 1996 | William H. Macy | Fargo |
| 1951 | Karl Malden | A Streetcar Named Desire |
| 1954 | Karl Malden (2) | On the Waterfront |
| 1984 | John Malkovich | Places in the Heart |
| 1993 | John Malkovich (2) | In the Line of Fire |
| 1955 | Joe Mantell | Marty |
| 1970 | John Marley | Love Story |
| 1966 | James Mason | Georgy Girl |
| 1982 | James Mason (2) | The Verdict |
| 1968 | Daniel Massey | Star! |
| 1966 | Walter Matthau | The Fortune Cookie |
| 1951 | Kevin McCarthy | Death of a Salesman |
| 2001 | Ian McKellen | The Lord of the Rings: The Fellowship of the Ring |
| 1952 | Victor McLaglen | The Quiet Man |
| 1975 | Burgess Meredith | The Day of the Locust |
| 1976 | Burgess Meredith (2) | Rocky |
| 1973 | Jason Miller | The Exorcist |
| 1970 | John Mills | Ryan's Daughter |
| 1955 | Sal Mineo | Rebel Without a Cause |
| 1960 | Sal Mineo (2) | Exodus |
| 1937 | Thomas Mitchell | The Hurricane |
| 1939 | Thomas Mitchell (2) | Stagecoach |
| 1945 | Robert Mitchum | The Story of G.I. Joe |
| 1942 | Frank Morgan | Tortilla Flat |
| 1984 | Noriyuki Morita | The Karate Kid |
| 1938 | Robert Morley | Marie Antoinette |
| 1996 | Armin Mueller-Stahl | Shine |
| 2006 | Eddie Murphy | Dreamgirls |
| 1956 | Don Murray | Bus Stop |
Read more about this topic: List Of Nominees For The Academy Award For Best Supporting Actor (by Actor)