| Trivia | Best Supporting Actor Oscar Winner |
|---|
| The first winner to have a 'Jr.' attached to his surname. | |
| Outlived in years every other Best Supporting Actor winner. | |
| Later won the Best Actor Oscar; the same man directed him to both wins. | |
| Earned his Oscar in the third Best Picture winner in which he appeared (to date). | |
| The last winner to appear in that film's sequel as the same character. | |
| Lost more than 30 pounds to portray a real-life person. | |
| Alphabetically first of all supporting actor winners. | |
| Won his Oscar exactly 40 years after he earned a nomination for his first credited role. | |
| The first Welsh winner. | |
| The only winner to not have a single line in his performance. | |
| Of Greek origin, though he played a Latino in his winning film. | |
| Won the Best Actor Oscar four years later, and has not since been nominated. | |
| First winner to later win the Best Actor Oscar. | |
| The last person to win for a film based on a Tennessee Williams play. | |
| The first to win for portraying a historical figure. | |
| Life imitated art, and this actor was alcoholic and broke five years after winning. | |
| Won his second Oscar for playing a Frenchman; won his first playing a Mexican. | |
| The first actor to win the Best Supporting Actor opposite Paul Newman. | |
| The only winner to also earn a medical license. | |
| This actor reportedly won his winning role under suspicious circumstances, and the story was later fictionalized in a Best Picture winner. | |
| The only winner with an alliterative first/last name whose initials aren't C.C. | |
| Won for a film in which he co-starred with six other actors who were (at some point) Best Supporting Actor nominees. | |
| Shares a surname with the winner from 55 years earlier. | |
| The last winner to share a surname with a US president. | |
| Won his second Oscar by beating two supporting category winners, one past and one future. | |
| The last winner to beat out three nominees from the same film. | |
