| movie | Super/Man: The Christopher Reeve Story (2024)As Self (archive footage) | (Not seen) |
| tv | Love Has Won: The Cult of Mother God (2023)As Self (archive footage)(1 episode) | (Not seen) |
| movie | Once Upon a Studio (2023)As Genie (voice) (archive footage) | (Not seen) |
| tv | History of the Sitcom (2021)As Self (archive footage) - Actor(8 episodes) | (Not seen) |
| movie | Robin Williams: Come Inside My Mind (2018)As Self (voice and archive footage) | (Not seen) |
| movie | Spielberg (2017) | (Not seen) |
| movie | Absolutely Anything (2015)As Dennis the Dog (voice) | (Not seen) |
| movie | Night at the Museum: Secret of the Tomb (2014)As Theodore Roosevelt | (Not seen) |
| movie | A Merry Friggin' Christmas (2014)As Mitch Mitchler | (Not seen) |
| movie | The Angriest Man in Brooklyn (2014)As Henry Altmann | (Not seen) |
| movie | The Big Wedding (2013)As Father Monaghan | (Not seen) |
| movie | The Butler (2013)As Dwight Eisenhower | (Not seen) |
| tv | Wilfred (2011)As Dr. Eddy(1 episode) | (Not seen) |
| movie | Happy Feet Two (2011)As Ramon / Lovelace (voice) | (Not seen) |
| tv | Outsourced (2010)As Hans Hänkie | (Not seen) |
| tv | Louie (2010)As Robin(1 episode) | (Not seen) |
| movie | Industrial Light & Magic: Creating the Impossible (2010) | (Not seen) |
| movie | World's Greatest Dad (2009)As Lance Clayton | (Not seen) |
| movie | Old Dogs (2009)As Dan | (Not seen) |
| movie | Night at the Museum: Battle of the Smithsonian (2009) (AKA "Night at the Museum 2")As Theodore Roosevelt | (Not seen) |
| movie | Shrink (2009)As Holden | (Not seen) |
| tv | The Graham Norton Show (2007)As Self(2 episodes) | (Not seen) |
| movie | The Pixar Story (2007)As Self (archive footage) | (Not seen) |
| movie | August Rush (2007)As Maxwell "Wizard" Wallace | (Not seen) |
| movie | License to Wed (2007)As Reverend Frank | (Not seen) |
| movie | Everyone's Hero (2006)As Napoleon Cross (voice) (uncredited) | (Not seen) |
| movie | Happy Feet (2006)As Ramon / Lovelace (voice) | (Not seen) |
| movie | Night at the Museum (2006) (AKA "Night at the Museum: The IMAX Experience")As Theodore Roosevelt | (Not seen) |
| movie | RV (2006) (AKA "RV: Runaway Vacation")As Bob Munro | (Not seen) |
| movie | Man of the Year (2006)As Tom Dobbs | (Not seen) |
| movie | The Night Listener (2006)As Gabriel Noone | (Not seen) |
| movie | The Big White (2005)As Paul Barnell | (Not seen) |
| movie | Robots (2005)As Fender (voice) | (Not seen) |
| movie | House of D (2004)As Pappass | (Not seen) |
| movie | The Final Cut (2004)As Alan W. Hakman | (Not seen) |
| tv | Real Time with Bill Maher (2003)As Self(2 episodes) | (Not seen) |
| tv | The Ellen DeGeneres Show (2003)As Self(3 episodes) | (Not seen) |
| tv | American Idol (2002)As Ivan 'Bob' Poppanoff the 'Russian Idol'(1 episode) | (Not seen) |
| movie | Robin Williams Live on Broadway (2002) (AKA "Robin Williams: Live on Broadway")As Self | (Not seen) |
| movie | One Hour Photo (2002)As Seymour Parrish | (Not seen) |
| movie | Death to Smoochy (2002)As Rainbow Randolph | (Not seen) |
| movie | Insomnia (2002)As Walter Finch | (Not seen) |
| movie | A.I. Artificial Intelligence (2001) (AKA "A.I.")As Dr. Know (voice) | (Not seen) |
| tv | SpongeBob SquarePants (1999)(1 episode) | (Not seen) |
| tv | Law & Order: Special Victims Unit (1999)As Merritt Rook(1 episode) | (Not seen) |
| movie | Bicentennial Man (1999) (AKA "Andrew NDR114")As Andrew | (Not seen) |
| movie | Jakob the Liar (1999)As Jakob Heym | (Not seen) |
| tv | Whose Line Is It Anyway? (1998)As Self(1 episode) | (Not seen) |
| movie | What Dreams May Come (1998)As Chris Nielsen | (Not seen) |
| movie | Patch Adams (1998)As Patch Adams | (Not seen) |
| movie | Flubber (1997)As Professor Philip Brainard | (Not seen) |
| movie | Deconstructing Harry (1997) (AKA "The Meanest Man in the World")As Mel | (Not seen) |
| movie | Good Will Hunting (1997)As Sean Maguire | (Not seen) |
| movie | Fathers' Day (1997)As Dale Putley | (Not seen) |
| tv | The Daily Show (1996)As Self(2 episodes) | (Not seen) |
| movie | The Secret Agent (1996)As Assassin (uncredited) | (Not seen) |
| movie | Aladdin and the King of Thieves (1996)As Genie (voice) | (Not seen) |
| movie | Hamlet (1996) (AKA "William Shakespeare's Hamlet")As Osric | (Not seen) |
| movie | The Birdcage (1996) (AKA "Birds of a Feather")As Armand Goldman | (Not seen) |
| movie | Jack (1996)As Jack Powell | (Not seen) |
| movie | To Wong Foo, Thanks for Everything! Julie Newmar (1995)As John Jacob Jingleheimer Schmidt (uncredited) | (Not seen) |
| movie | Nine Months (1995)As Dr. Kosevich | (Not seen) |
| movie | Jumanji (1995)As Alan Parrish | (Not seen) |
| tv | Friends (1994)As Tomas (uncredited)(1 episode) | (Not seen) |
| tv | Homicide: Life on the Street (1993)As Robert Ellison(1 episode) | (Not seen) |
| movie | Mrs. Doubtfire (1993) (AKA "Mrs. Doubt")As Daniel Hillard / Mrs. Doubtfire | (Not seen) |
| tv | The Larry Sanders Show (1992)As Robin Williams(2 episodes) | (Not seen) |
| movie | FernGully: The Last Rainforest (1992)As Batty Koda (voice) | (Not seen) |
| movie | Toys (1992)As Leslie Zevo | (Not seen) |
| movie | Aladdin (1992)As The Genie / The Peddler (voice) | (Not seen) |
| movie | Shakes the Clown (1991)As Mime Class Instructor | (Not seen) |
| movie | Dead Again (1991)As Cozy Carlisle | (Not seen) |
| movie | The Fisher King (1991)As Henry Sagan Parry | (Not seen) |
| movie | Hook (1991)As Peter Banning | (Not seen) |
| movie | Cadillac Man (1990)As Joey O'Brien | (Not seen) |
| movie | Awakenings (1990)As Malcolm Sayer | (Not seen) |
| tv | The Simpsons (1989)As Dr. J. Loren Pryor (voice) (as Doug Hill)(1 episode) | (Not seen) |
| movie | Dead Poets Society (1989)As John Keating | (Not seen) |
| movie | The Adventures of Baron Munchausen (1988)As King of the Moon | (Not seen) |
| movie | Good Morning, Vietnam (1987)As Adrian Cronauer | (Not seen) |
| movie | Club Paradise (1986)As Jack Moniker | (Not seen) |
| movie | Moscow on the Hudson (1984)As Vladimir Ivanoff | (Not seen) |
| movie | The Survivors (1983)As Donald Quinelle | (Not seen) |
| movie | The World According to Garp (1982)As T.S. Garp | (Not seen) |
| movie | Popeye (1980)As Popeye | (Not seen) |
| tv | Saturday Night Live (1975)As Self - Cameo (uncredited)(5 episodes) | (Not seen) |
| tv | The Oscars (1953)As Self(7 episodes) | (Not seen) |