| 2025 | Estamos todos en directo con John Mulaney (serie) | Self - Actor and Best-Selling Author |
| 2023 | Sly | Self |
| 2022 | Reindeer in Here | Smiley (voice) |
| 2022 | Batwheels (serie) | Santa (voice) |
| 2022 | Who's Talking to Chris Wallace? (serie) | Self |
| 2022 | The Jennifer Hudson Show (serie) | Self |
| 2022 | Sherri (serie) | Invitado especial |
| 2022 | A la de tres | Dr. Brenner |
| 2022 | La leyenda de Vox Machina (serie) | Wilhand Trickfoot (voice) |
| 2021 | Ultrasecretos (serie) | Melvin (voice) |
| 2021 | American Horror Stories (serie) | Dr. Eric Nostrum |
| 2021 | History of the Sitcom (serie) | Self - Actor |
| 2021 | Monstruos a la obra (serie) | Fritz (voice) |
| 2021 | Los Rugrats (serie) | Boris (voice) |
| 2020 | AGFA's Special Christmas Special | Arthur Herbert Fonzarelli |
| 2020 | Pink Skies Ahead | Dr. Cotton |
| 2020 | Close Enough (serie) | Alex's Dad (voice) |
| 2020 | Medical Police (serie) | Sy Mittleman |
| 2019 | Suzi Q | Self |
| 2019 | El programa de Kelly Clarkson (serie) | — |
| 2019 | Lights Out with David Spade (serie) | Self - Panelist |
| 2019 | Pizza: A Love Story | self |
| 2018 | Inside The Episode: Barry (serie) | Self |
| 2018 | Barry (serie) | Gene Cousineau |
| 2018 | El edificio de Wayne (serie) | Leo Wasserman |
| 2017 | La primera Navidad de Mariah y Jack | Grandpa Bill (voice) |
| 2017 | Patoaventuras (serie) | Bailiff (voice) |
| 2016 | Hank Zipzer's Christmas Catastrophe | Mr. Rock |
| 2016 | Better Late Than Never (serie) | Self |
| 2015 | The Robot Chicken Christmas Special: The X-Mas United | Nerd's Dad (voice) |
| 2015 | The Late Show with Stephen Colbert (serie) | Self |
| 2015 | Hollywood en primer plano (serie) | Self |
| 2015 | Larry Gaye: Renegade Male Flight Attendant | Stanley Warner |
| 2014 | Larga vida al rey Julien (serie) | Uncle King Julien (voice) |
| 2014 | Penn Zero: Part-Time Hero (serie) | The Snowman (voice) |
| 2014 | Robot Chicken: Christmas Specials | Various (voice) (archive sound) |
| 2014 | BoJack Horseman (serie) | Henry Winkler (voice) |
| 2014 | Late Night with Seth Meyers (serie) | Self |
| 2014 | The Tonight Show Starring Jimmy Fallon (serie) | Self |
| 2014 | Hank Zipzer (serie) | Mr. Rock |
| 2013 | Tito Yayo (serie) | Nacho Cheese (voice) |
| 2013 | Hollywood Game Night (serie) | Self |
| 2013 | Teen Titans Go! (serie) | Captain Cool (voice) |
| 2012 | 1600 Penn (serie) | Senator Faxler |
| 2012 | Peso Pesado | Marty Streb |
| 2012 | Comedy Bang! Bang! (serie) | Leonard Rascal |
| 2011 | LEGO Hero Factory: Savage Planet | Nathaniel Zib (voice) |
| 2011 | New Girl (serie) | Flip |
| 2011 | Adventures of Serial Buddies | Narrator |
| 2011 | Sin Pegar Ojo (serie) | Marty Alexander |
| 2011 | Bubble Guppies (serie) | Yeti (voice) |
| 2011 | Bob's Burgers (serie) | Mall Santa (voice) |
| 2011 | Classic TV Bloopers Uncensored | Himself |
| 2010 | LEGO Hero Factory: Rise of the Rookies | Nathaniel Zib (voice) |
| 2010 | LEGO Hero Factory (serie) | Professor Nathaniel Zib |
| 2010 | Kick Buttowski (serie) | Principal (voice) |
| 2009 | We Are the People We've Been Waiting For | Self |
| 2009 | Angela and Friends (serie) | — |
| 2009 | Watch What Happens Live with Andy Cohen (serie) | Invitado especial |
| 2009 | Royal Pains (serie) | Eddie R. Lawson |
| 2009 | Sit Down Shut Up (serie) | — |
| 2009 | Parks and Recreation (serie) | Dr. Saperstein |
| 2008 | La mejor época del año | Uncle Ralph |
| 2008 | Childrens Hospital (serie) | Sy Mittleman |
| 2008 | Shatner's Raw Nerve (serie) | Self |
| 2008 | El intrépido Batman (serie) | Ambush Bug (voice) |
| 2008 | Celebrity Juice (serie) | Self |
| 2008 | A Plumm Summer | Happy Herb |
| 2006 | Rachael Ray (serie) | — |
| 2006 | The One Show (serie) | Invitado especial |
| 2006 | Click | Ted |
| 2006 | Unbeatable Harold | Fullerton |
| 2005 | The Kid & I | Johnny Bernstein |
| 2005 | Berkeley | Sy |
| 2005 | Out of Practice (serie) | Dr. Stewart Barnes |
| 2005 | 8 Out of 10 Cats (serie) | Self |
| 2005 | Robot Chicken (serie) | John Adams (voice) |
| 2005 | Padre made in USA (serie) | Child Protection Services Agent (voice) |
| 2005 | Numb3rs (serie) | — |
| 2005 | The Late Late Show with Craig Ferguson (serie) | Self |
| 2004 | The Tony Danza Show (serie) | Invitado especial |
| 2004 | Fronterz | — |
| 2003 | Arrested Development (serie) | Barry Zuckerkorn |
| 2003 | The Ellen DeGeneres Show (serie) | Self |
| 2003 | Clifford's Puppy Days (serie) | Norville (voice) |
| 2003 | Duck Dodgers (serie) | Dr. Maniac (voice) |
| 2003 | La maldición de los hoyos | Stanley Yelnats III |
| 2003 | Jimmy Kimmel Live! (serie) | Self |
| 2002 | Ozzy & Drix (serie) | Sal Monella (voice) |
| 2002 | American Idol (serie) | Self - Audience Member (uncredited) |
| 2001 | Richard & Judy (serie) | Self |
| 2001 | Crossing Jordan (serie) | Dr. Jack Slocum |
| 2001 | Good Day Live (serie) | Self |
| 2000 | Battery Park (serie) | Walter Dunleavy |
| 1999 | Turno de guardia (serie) | Lester Martin |
| 1999 | Ley y orden: Unidad de Víctimas Especiales (serie) | Edwin Todd |
| 1999 | Teen Choice Awards (serie) | Self - Nominee |
| 1999 | Bob Esponja (serie) | Jeff Tentacles |
| 1999 | Fenómenos extraños (serie) | Fergus McGarrity |
| 1999 | Dill Scallion | Larry Steinberg |
| 1998 | El aguador | Coach Klein |
| 1997 | The View (serie) | Self |
| 1997 | Hostage High | Skip Fine |
| 1997 | Descansa como puedas | Jack Potter |
| 1997 | El abogado (serie) | Dr. Henry Olson |
| 1997 | El Revolver Maldito (serie) | — |
| 1997 | El rey de la colina (serie) | Henry Winkler (voice) |
| 1996 | Access Hollywood (serie) | Self |
| 1996 | Las pistas de Blue (serie) | — |
| 1996 | E! True Hollywood Story (serie) | — |
| 1995 | A Child Is Missing | Steven Moore |
| 1995 | The Drew Carey Show (serie) | Mr. Newsome |
| 1994 | One Christmas | Dad |
| 1993 | The Only Way Out | Tony |
| 1993 | Late Night with Conan O'Brien (serie) | Invitado especial |
| 1993 | GMTV (serie) | Self |
| 1992 | Sightings (serie) | — |
| 1991 | Pebble Mill (serie) | Self |
| 1991 | Absolute Strangers | Marty Klein |
| 1989 | Los Simpson (serie) | Ramrod (voice) |
| 1989 | Molly and the Skywalkerz in "Two Daddies?" | Carl Conway (voice) |
| 1988 | This Morning (serie) | Invitado especial |
| 1986 | Barbra Streisand: One Voice | Self (Interviewee) |
| 1985 | Molly and the Skywalkerz in "Happily Ever After" | Carl Conway (voice) |
| 1984 | Steve Martin: Homage to Steve | Self |
| 1984 | Strong Kids, Safe Kids | Himself / Arthur 'The Fonz' Fonzarelli |
| 1982 | Nature (serie) | Narrator (voice) |
| 1982 | Barry Norman in Celebrity City | Self |
| 1982 | Movida de noche | Chuck Lumley |
| 1980 | The Fonz and the Happy Days Gang (serie) | Fonzie |
| 1979 | An American Christmas Carol | Benedict Slade |
| 1979 | Sitcom: The Adventures of Garry Marshall | Himself |
| 1978 | Steve Martin: A Wild and Crazy Guy | Self |
| 1978 | Mork & Mindy (serie) | Fonzie |
| 1978 | Soy único | Andy Schmidt |
| 1977 | Who Are the DeBolts? And Where Did They Get Nineteen Kids? | Self - Host (Television Version) |
| 1977 | Heroes | Jack Dunne |
| 1976 | Laverne & Shirley (serie) | — |
| 1975 | Katherine | Bob Kline |
| 1974 | Black Jackets (Dias Felices) | Butchey Weinstein |
| 1974 | Happy Days (serie) | Arthur Fonzarelli |
| 1972 | El show de Bob Newhart (serie) | Miles Lascoe |
| 1971 | The Great American Dream Machine (serie) | Himself |
| 1970 | The Mary Tyler Moore Show (serie) | Steve Waldman |
| 1962 | The Tonight Show Starring Johnny Carson (serie) | Self |
| 1953 | The Oscars (serie) | Self |
| 1949 | The Emmy Awards (serie) | Self |
