| — | The 2nd Annual HBO Young Comedians Show | Self |
| — | Eye of the Storm | Self (archive footage) |
| 2024 | The Robin Williams Supernova | |
| 2024 | Super/Man: The Christopher Reeve Story | Self (archive footage) |
| 2023 | Once Upon a Studio | Genie (voice) (archive footage) |
| 2023 | Love Has Won: The Cult of Mother God | Self (archive footage) |
| 2022 | Dark Side of Comedy | Self (archive footage) |
| 2022 | The Hall: Honoring the Greats of Stand-Up | Self (archive footage) |
| 2022 | L'Animographe, ou Je suis né dans une boîte à chaussures | Self (archive footage) |
| 2022 | Robin Williams: Laugh Until You Cry | Self (archive footage) |
| 2021 | Superstar | Self (archive footage) |
| 2021 | Superstar: Robin Williams | Self (archive footage) |
| 2020 | Robin's Wish | Himself (archive footage) |
| 2020 | The Paley Center Salutes Law & Order: SVU | (archive footage) |
| 2020 | Return to Sweethaven: A Look Back With Robin And The Altmans | Self (archive footage) |
| 2018 | Robin Williams: Come Inside My Mind | Self (archive footage) |
| 2018 | The Top Ten Revealed | Self (archive footage) |
| 2016 | Koko: The Gorilla Who Talks to People | Self |
| 2016 | Robin Williams: Behind Closed Doors | Self (archive footage) |
| 2015 | Absolutely Anything | Dennis the Dog (voice) |
| 2015 | Thank You, Del: The Story of the Del Close Marathon | Self (archive footage) |
| 2015 | Behind Closed Doors with Natalie Morales | Self (archive footage) |
| 2014 | Night at the Museum: Secret of the Tomb | Theodore Roosevelt |
| 2014 | The Angriest Man in Brooklyn | Henry Altmann |
| 2014 | Boulevard | Nolan Mack |
| 2014 | A Merry Friggin' Christmas | Mitch Mitchler |
| 2014 | And the Oscar Goes To... | Self (archive footage) |
| 2014 | Altman | Self |
| 2014 | All About Ann: Governor Richards of the Lone Star State | Self (archive footage) |
| 2014 | Robin Williams Remembered | Self |
| 2014 | 3 Still Standing | Self |
| 2014 | Robin Williams, un génie de la comédie | Himself (archive footage) |
| 2013 | The Butler | Dwight Eisenhower |
| 2013 | The Big Wedding | Father Monaghan |
| 2013 | The Face of Love | Roger Stillman |
| 2013 | The Crazy Ones | Simon Roberts |
| 2013 | Richard Pryor: Omit the Logic | Self |
| 2013 | Comic Relief Zero | Self (archive footage) |
| 2013 | Kelly Clarkson's Cautionary Christmas Music Tale | Self |
| 2012 | Final Cut: Hölgyeim és uraim | (archive footage) |
| 2012 | Radioman | Self |
| 2012 | Persistence of Vision | Himself |
| 2012 | Inside Comedy | Self |
| 2011 | Happy Feet Two | Ramon / Lovelace (voice) |
| 2011 | Wilfred | Dr. Eddy |
| 2011 | Classic TV Bloopers Uncensored | Himself |
| 2010 | Louie | Robin |
| 2010 | Who Is Harry Nilsson (And Why Is Everybody Talkin' About Him?) | Himself |
| 2010 | 2Everything2Terrible2: Tokyo Drift | archival footage |
| 2009 | Night at the Museum: Battle of the Smithsonian | Theodore Roosevelt |
| 2009 | Old Dogs | Dan |
| 2009 | World's Greatest Dad | Lance Clayton |
| 2009 | Shrink | Holden |
| 2009 | Robin Williams: Weapons of Self Destruction | Himself |
| 2009 | Alan Carr: Chatty Man | Self |
| 2009 | The Jay Leno Show | Self |
| 2009 | SpongeBob's Truth or Square | Self |
| 2008 | Dreams with Sharp Teeth | Himself |
| 2008 | The Bonnie Hunt Show | Himself |
| 2008 | Starz Inside: Ladies or Gentlemen | Self (archive footage) |
| 2008 | We Are Most Amused | Self |
| 2008 | History of the Joke | Self |
| 2008 | The Madness and Misadventures of Munchausen | Self |
| 2008 | Pioneers of Television | Self |
| 2008 | Johnny Carson Celebrates Christmas | Self |
| 2007 | August Rush | Maxwell "Wizard" Wallace |
| 2007 | License to Wed | Reverend Frank |
| 2007 | The Graham Norton Show | Self |
| 2007 | The Pixar Story | Self (archive footage) |
| 2007 | Mr. Warmth: The Don Rickles Project | Self |
| 2007 | Elton 60: Live At Madison Square Garden | Self |
| 2007 | Bienvenue à Cannes | Self |
| 2007 | Certifiably Jonathan | Self |
| 2007 | Fog City Mavericks | Self |
| 2007 | Shrink Rap | Himself |
| 2006 | म्युज़ीयम के अंदर फंस गया सिकंदर | Teddy Roosevelt |
| 2006 | Happy Feet | Ramon / Lovelace (voice) |
| 2006 | RV | Bob Munro |
| 2006 | Man of the Year | Tom Dobbs |
| 2006 | Everyone's Hero | Napoleon Cross (uncredited) |
| 2006 | The Night Listener | Gabriel Noone |
| 2006 | JoJo: The Pop Princess | Himself |
| 2006 | VH1 Rock Honors | Himself |
| 2006 | Comic Relief 2006 | |
| 2006 | RV Nation: The Culture of Road Warriors | Self |
| 2006 | Barry Sonnenfeld: The Kosher Cowboy | Self |
| 2005 | Robots | Fender (voice) |
| 2005 | The Big White | Paul Barnell |
| 2005 | The Aristocrats | Self |
| 2005 | House of D | Pappass |
| 2005 | The Late Late Show with Craig Ferguson | Self |
| 2005 | Mind of Mencia | |
| 2005 | Emmanuel's Gift | Self (archive footage) |
| 2005 | Earth to America | Self |
| 2005 | Romanekian | Himself |
| 2005 | Nos Bastidores de Hollywood | Self |
| 2005 | Sit Down Comedy with David Steinberg | Himself |
| 2004 | The Final Cut | Alan W. Hakman |
| 2004 | Noel | Charlie Boyd / The Priest |
| 2004 | The Tour Baby | Himself |
| 2003 | Real Time with Bill Maher | Self |
| 2003 | The Ellen DeGeneres Show | Self |
| 2003 | Jimmy Kimmel Live! | Self |
| 2003 | The Rutles 2: Can't Buy Me Lunch | Hans Hänkie |
| 2003 | Richard Pryor: I Ain't Dead Yet, #*%$#@!! | Self |
| 2003 | Celebrities Uncensored | Self |
| 2003 | 2003 Florida Marlins: The Official World Series Film | Himself |
| 2002 | Insomnia | Walter Finch |
| 2002 | One Hour Photo | Seymour Parrish |
| 2002 | Death to Smoochy | Rainbow Randolph |
| 2002 | American Idol | Ivan 'Bob' Poppanoff the 'Russian Idol' |
| 2002 | Robin Williams: Live on Broadway | Himself |
| 2002 | The 1st 13th Annual Fancy Anvil Awards Show Program Special: Live in Stereo | Himself |
| 2002 | Life with Bonnie | Kevin Powalski |
| 2001 | A.I. Artificial Intelligence | Dr. Know (voice) |
| 2001 | Good Day Live | Self |
| 2001 | Anatomy of a Scene | Self |
| 2000 | Chuck Jones: Extremes and In-Betweens - A Life in Animation | Self |
| 2000 | The Beatles Revolution | Self |
| 2000 | Making Jumanji: The Realm of Imagination | Self / Alan Parrish |
| 1999 | कानून और व्यवस्था: विशेष पीड़ित इकाई | Merritt Rook |
| 1999 | Bicentennial Man | Andrew |
| 1999 | स्पंज बॉब स्क्वायर पैंट | |
| 1999 | Jakob the Liar | Jakob Heym |
| 1999 | Get Bruce! | Self |
| 1999 | Teen Choice Awards | Self - Nominee |
| 1999 | Billy Connolly: Erect for 30 Years | |
| 1999 | The Early Show | Self |
| 1998 | Patch Adams | Hunter "Patch" Adams |
| 1998 | What Dreams May Come | Chris Nielsen |
| 1998 | Whose Line Is It Anyway? | Himself |
| 1998 | Hollywood Squares | Self - Panelist |
| 1998 | George Martin: In My Life | Self |
| 1998 | L.A. Doctors | Hugo Kingsley |
| 1998 | Junket Whore | Self |
| 1997 | Good Will Hunting | Sean Maguire |
| 1997 | Flubber | Professor Philip Brainard |
| 1997 | Deconstructing Harry | Mel |
| 1997 | Fathers' Day | Dale Putley |
| 1997 | The View | Self |
| 1997 | Great Minds Think for Themselves | Genie (voice) |
| 1996 | Aladdin and the King of Thieves | Genie (voice) |
| 1996 | Jack | Jack Powell |
| 1996 | The Birdcage | Armand Goldman |
| 1996 | The Daily Show | Self |
| 1996 | Hamlet | Osric |
| 1996 | The Secret Agent | The Professor (uncredited) |
| 1996 | Nichols and May: Take Two | Self |
| 1996 | Clive Anderson All Talk | Self |
| 1995 | Jumanji | Alan Parrish |
| 1995 | To Wong Foo, Thanks for Everything! Julie Newmar | John Jacob Jingleheimer Schmidt (uncredited) |
| 1995 | Nine Months | Dr. Kosevich |
| 1995 | The First 100 Years: A Celebration of American Movies | Self |
| 1995 | Aladdin on Ice | Genie (voice) |
| 1994 | दोस्त | Tomas (uncredited) |
| 1994 | Being Human | Hector |
| 1994 | Inside the Actors Studio | Self |
| 1994 | In Search of Dr. Seuss | The Father |
| 1994 | The World of Jim Henson | Self (archive footage) |
| 1994 | Sesame Street | All-Star 25th Birthday: Stars and Street Forever! | Self (archive footage) |
| 1994 | But... Seriously | Self (archive footage) |
| 1994 | In the Wild: Dolphins With Robin Williams | Self |
| 1993 | Mrs. Doubtfire | Daniel Hillard / Mrs. Doubtfire |
| 1993 | Late Night with Conan O'Brien | Self - Guest |
| 1993 | Homicide: Life on the Street | Robert Ellison |
| 1993 | A Tribute to Sam Kinison | Self |
| 1993 | An Evening with Lily Tomlin and Friends | Self |
| 1992 | Aladdin | Genie / Peddler (voice) |
| 1992 | FernGully: The Last Rainforest | Batty Koda (voice) |
| 1992 | Toys | Leslie Zevo |
| 1992 | The Tonight Show with Jay Leno | Himself |
| 1992 | The Larry Sanders Show | Robin Williams |
| 1992 | The Return of Spinal Tap | Robin Williams (TV version) |
| 1992 | Terry Wogan's Friday Night | Self |
| 1991 | Hook | Peter Banning / Peter Pan |
| 1991 | The Fisher King | Parry |
| 1991 | Dead Again | Cozy Carlisle |
| 1991 | Shakes the Clown | Mime Class Instructor |
| 1991 | A Wish for Wings That Work | Kiwi (voice) |
| 1991 | Charlie Rose | Self - Guest |
| 1991 | Rabbit Ears - The Fool and the Flying Ship | Narrator (voice) |
| 1990 | Awakenings | Malcolm Sayer |
| 1990 | Cadillac Man | Joey O'Brien |
| 1990 | The Earth Day Special | Everyman |
| 1989 | Dead Poets Society | John Keating |
| 1989 | The Simpsons | Dr. J. Loren Pryor (voice) (as Doug Hill) |
| 1989 | I'm from Hollywood | Himself |
| 1989 | Back to Neverland | Robin |
| 1989 | Saturday Night Live: 15th Anniversary | Self |
| 1989 | Whoopi Goldberg Presents Billy Connolly | Himself (uncredited) |
| 1989 | Comic Relief III | |
| 1988 | The Adventures of Baron Munchausen | King of the Moon |
| 1988 | LIVE with Kelly and Mark | Himself |
| 1988 | Portrait of a White Marriage | Bill Lohmer – Air Conditioning Salesman (uncredited) |
| 1988 | Free to Be... a Family | Self |
| 1988 | Rabbit Ears - Pecos Bill | Narrator (voice) |
| 1987 | Good Morning, Vietnam | Adrian Cronauer |
| 1987 | Dear America: Letters Home from Vietnam | (voice) |
| 1987 | Citizen Steve | Robin Leach |
| 1987 | Carol, Carl, Whoopi and Robin | |
| 1987 | Jonathan Winters: On the Ledge | Self |
| 1987 | Bobby McFerrin: Spontaneous Inventions | Himself |
| 1986 | The Best of Times | Jack Dundee |
| 1986 | Club Paradise | Jack Moniker |
| 1986 | Robin Williams: An Evening at the Met | Himself |
| 1986 | Seize the Day | Tommy Wilhelm |
| 1986 | American Masters | Self |
| 1986 | Barbra Streisand: One Voice | Self - Guest Performer |
| 1986 | Bob Goldthwait -- Don't Watch This Show | Albert Einstein |
| 1986 | The Young Comedians All-Star Reunion | Himself |
| 1986 | Comic Relief | Self - Host |
| 1986 | Super Duper Bloopers | Himself |
| 1986 | Max Headroom's Giant Christmas Turkey | Himself |
| 1985 | Richard Lewis: I'm In Pain | Self |
| 1984 | Moscow on the Hudson | Vladimir Ivanoff |
| 1983 | The Survivors | Donald Quinelle |
| 1983 | An Evening with Robin Williams | Himself |
| 1982 | The World According to Garp | T.S. Garp |
| 1982 | Faerie Tale Theatre | The Frog / Prince Robin |
| 1982 | The Tale of the Frog Prince | The Frog / Prince Robin |
| 1982 | Wogan | Self |
| 1982 | E.T. and Friends: Magical Movie Visitors | Himself - Host |
| 1982 | Night of 100 Stars | Self |
| 1982 | The Mork & Mindy / Laverne & Shirley / Fonz Hour | Mork (voice) |
| 1982 | I Love Liberty | Self |
| 1982 | The Billy Crystal Comedy Hour | Himself |
| 1980 | Popeye | Popeye |
| 1980 | Andy Kaufman Plays Carnegie Hall | Himself (uncredited) |
| 1979 | Out of the Blue | Mork |
| 1979 | Rona Barrett Looks at 1978 | |
| 1979 | Sitcom: The Adventures of Garry Marshall | Himself |
| 1978 | Mork & Mindy | Mork |
| 1978 | Robin Williams: Off the Wall | Himself |
| 1978 | Sorority '62 | Henry |
| 1978 | Robin Williams - Live At The Roxy | Self |
| 1977 | Eight Is Enough | The Circuit Breakers Member |
| 1977 | Can I Do It Till I Need Glasses? | Lawyer / Man with Toothache |
| 1977 | The Richard Pryor Show | Various |
| 1977 | Laugh-In | Regular Performer |
| 1977 | The Complete Richard Pryor Roast | |
| 1975 | Saturday Night Live | Self - Cameo (uncredited) |
| 1975 | Saturday Night Live | Self - Host |
| 1974 | Happy Days | Mork |
| 1969 | Sesame Street | Himself |
| 1962 | The Tonight Show Starring Johnny Carson | Self |
| 1959 | The Grammy Awards | |
| 1956 | Tony Awards | Self - Presenter |
| 1953 | The Oscars | Self |
| 1952 | Today | Self |
| 1944 | Golden Globe Awards | Self - Winner |
