A
| Year | Nominee | Film |
|---|---|---|
| 1963 | Nick Adams | Twilight of Honor |
| 2007 | Casey Affleck | The Assassination of Jesse James by the Coward Robert Ford |
| 1939 | Brian Aherne | Juarez |
| 1989 | Danny Aiello | Do the Right Thing |
| 1953 | Eddie Albert | Roman Holiday |
| 1972 | Eddie Albert (2) | The Heartbreak Kid |
| 1968 | Jack Albertson | The Subject Was Roses |
| 2004 | Alan Alda | The Aviator |
| 1985 | Don Ameche | Cocoon |
| 2006 | Alan Arkin | Little Miss Sunshine |
| 1974 | Fred Astaire | The Towering Inferno |
| 1936 | Mischa Auer | My Man Godfrey |
| 1989 | Dan Aykroyd | Driving Miss Daisy |
Read more about this topic: List Of Nominees For The Academy Award For Best Supporting Actor (by Actor)