| Year |
Awards |
Category |
Movie |
Win/Nominated |
| 1997 | Academy Award | Best Supporting Actor | Good Will Hunting | Won |
| 1991 | Academy Award | Best Actor | The Fisher King | Nominated |
| 1989 | Academy Award | Best Actor | Dead Poets Society | Nominated |
| 1988 | Academy Award | Best Actor | for: Good Morning, Vietnam | Nominated |
| 1990 | BAFTA Film Award | Best Actor | Dead Poets Society | Nominated |
| 1988 | BAFTA Film Award | Best Actor | Good Morning, Vietnam | Nominated |
| 2003 | Broadcast Film Critics Award | Best Actor | One Hour Photo | Nominated |
| 2002 | Broadcast Film Critics Award | Best Actor | One Hour Photo | Nominated |
| 1990 | National Board of Review Award | Best Actor | Awakenings | Won |
| 1997 | SAG Award | Best Supporting Actor | Good Will Hunting | Won |
| 1999 | Golden Globe Awards | Best Actor (Comedy or Musical) | Patch Adams | Nominated |
| 1998 | Golden Globe Awards | Best Supporting Actor | Good Will Hunting | Nominated |
| 1997 | Golden Globe Awards | Best Supporting Actor | Good Will Hunting | Nominated |
| 1993 | Golden Globe Awards | Best Actor (Musical or Comedy) | Mrs. Doubtfire | Won |
| 1991 | Golden Globe Awards | Best Actor (Musical or Comedy) | The Fisher King | Won |
| 1990 | Golden Globe Awards | Best Actor (Drama) | Awakenings | Nominated |
| 1989 | Golden Globe Awards | Best Actor (Drama) | Dead Poets Society | Nominated |
| 1988 | Golden Globe Awards | Best Actor (Comedy or Musical) | Good Morning Vietnam | Nominated |
| 1984 | Golden Globe Awards | Best Actor (Musical or Comedy) | Moscow on the Hudson | Nominated |
| 1997 | MTV Movie Award | Best Comedic Performance | The Birdcage | Nominated |
| 1997 | MTV Movie Award | Best On-Screen Duo | The Birdcage | Nominated |
| 1994 | MTV Movie Award | Best Comedic Performance | Mrs. Doubtfire | Won |
| 1993 | MTV Movie Award | Best Male Performance | Mrs. Doubtfire | Won |
| 1993 | MTV Movie Award | Best Comedic Performance | Aladdin | Won |
| 2003 | OFCS Award | Best Actor | One Hour Photo | Nominated |
| 1994 | People's Choice Award | Favorite Comedy Motion Picture Actor | - | Won |
| 2003 | Emmy Award | Outstanding Individual Performance | Robin Williams: Live on Broadway | Nominated |
| 1996 | Emmy Award | Outstanding Individual Performance | Comic Relief VII | Nominated |
| 1994 | Emmy Award | Outstanding Guest Actor | Homicide: Life on the Street | Nominated |
| 1987 | Emmy Award | Outstanding Individual Performance | Carol, Carl, Whoopi and Robin | Won |
| 1979 | Emmy Award | Outstanding Lead Actor | Mork & Mindy | Nominated |
| 1989 | ACE Award | Performance in a Comedy Special | Comic Relief '87 | Won |
| 1987 | ACE Award | Performance in a Comedy Special | Comic Relief | Won |
| 2000 | Blockbuster Entertainment Award | Favorite Comedy Actor | Bicentennial Man | Nominated |
| 1998 | Blockbuster Entertainment Award | Favorite Actor/Actress - Family | Flubber | Won |
| 2003 | Golden Satellite Award | Best Performance by an Actor | One Hour Photo | Nominated |
| 1999 | Golden Satellite Award | Best Performance by an Actor | Patch Adams | Nominated |
| 1998 | Golden Satellite Award | Best Performance by an Actor | Good Will Hunting | Nominated |
| 2003 | Razzie Award | Worst Supporting Actor | Death to Smoochy | Nominated |
| 2000 | Razzie Award | Worst Actor | Bicentennial Man and Jakob the Liar | Nominated |