Jason Alexander
Jay Scott Greenspan (born September 23, 1959), better known by his professional name of Jason Alexander, is an American actor, writer, comedian, television director and producer, and singer. He is best known for his role as George Costanza on the television series Seinfeld, appearing in the sitcom from 1989 to 1998. He also has had an active career on the stage, appearing in several Broadway musicals including Jerome Robbins' Broadway in 1989, for which he won the Tony Award as Best Actor in a Musical. He appeared in the Los Angeles production of The Producers with Martin Short. He is the Artistic Director of "Reprise! Broadway's Best in Los Angeles," where he has directed several musicals. Alexander is also an avid poker player.
Known For
Credits
- 2025 · The Bad Guys: The Series as Mysterious Figure (voice)
- 2025 · The Bad Guys: The Series as D.B. Cougar (voice)
- 2025 · The Electric State as Ted / Wingman
- 2023 · Leo as Jayda's Dad (voice)
- 2023 · Rock, Paper, Scissors as Jonathan Fartjoke (voice)
- 2023 · History of the World: Part II as Maurice Cheeks
- 2021 · Star Trek: Prodigy as Doctor Noum (voice)
- 2021 · Star Trek: Prodigy as Counselor Noum (voice)
- 2021 · The Problem with Jon Stewart as Jeff Bezos
- 2021 · Celebrity Wheel of Fortune as Self - Contestant
- 2020 · Stars in the House as Self
- 2020 · Stars in the House as Self - Special Guest
- 2019 · Harley Quinn as Sy Borgman (voice)
- 2019 · The Movies That Made Us as Self
- 2019 · Mad About You as Jason Alexander
- 2018 · The Conners as Pastor Phil
- 2017 · Young Sheldon as Gene Lundy
- 2017 · The Orville as Olix
- 2017 · The Marvelous Mrs. Maisel as Asher Friedman
- 2016 · The $100,000 Pyramid as Self
- 2016 · Match Game as Self - Panelist
- 2016 · To Tell the Truth as Self - Panelist
- 2015 · The Grinder as Cliff Bemis
- 2015 · The Late Late Show with James Corden as Self
- 2015 · Wild Card as Pinky
- 2014 · Penn Zero: Part-Time Hero as Coach Wallace (voice)
- 2014 · The Tom and Jerry Show as Rick (voice)
- 2014 · TripTank as Doctor (voice)
- 2014 · Late Night with Seth Meyers as Self - Guest
- 2013 · Kirstie as Stanford Temple
- 2013 · Hollywood Game Night as Self
- 2013 · Drunk History as William Tweed
- 2012 · Comedians in Cars Getting Coffee as Self
- 2012 · Comedy Bang! Bang! as Inspector Gantlet
- 2011 · Talking Dead as Self
- 2011 · China, IL as Harold (voice)
- 2011 · Franklin & Bash as Carter Lang
- 2011 · Harry's Law as Richard Cross
- 2010 · Fish Hooks as Mr. Nibbles
- 2010 · Fish Hooks as Mr. Nibbles (voice)
- 2010 · The Marriage Ref as Self - Panelist
- 2009 · The Cleveland Show as
- 2009 · Community as Mountain Man
- 2009 · Meteor as Dr. Chetwyn
- 2009 · Hachi: A Dog's Tale as Carl
- 2006 · Rachael Ray as Self - Guest
- 2006 · The New Adventures of Old Christine as Dr. Palmer
- 2005 · Criminal Minds as Prof. Rothchild
- 2005 · Everybody Hates Chris as Principal Edwards
- 2005 · Robot Chicken as Krampus (voice)
- 2005 · American Dad! as Mr. Orlando (voice)
- 2005 · American Dad! as Sal (voice)
- 2005 · The Late Late Show with Craig Ferguson as Self
- 2004 · Listen Up! as Tony Kleinman
- 2004 · The Tony Danza Show as Self - Guest
- 2003 · Two and a Half Men as Dr. Goodman
- 2003 · The Ellen DeGeneres Show as Self
- 2003 · Real Time with Bill Maher as Self
- 2003 · Jimmy Kimmel Live! as Self
- 2002 · The Twilight Zone as Patient
- 2002 · Monk as Marty Eels
- 2001 · Shallow Hal as Mauricio Wilson
- 2001 · Good Day Live as Self
- 2001 · The Legend of Tarzan as Zutho (voice)
- 2001 · Primetime Glick as
- 2001 · Critics Choice Awards as Self
- 2001 · Disney's House of Mouse as
- 2000 · Curb Your Enthusiasm as Jason Alexander
- 2000 · The Huntress as
- 2000 · Son of the Beach as
- 2000 · Malcolm in the Middle as Leonard
- 1999 · The Late Late Show with Craig Kilborn as Self - Guest
- 1999 · Dilbert as Catbert (voice)
- 1998 · Hollywood Squares as Self - Panelist
- 1998 · Hercules as Poseidon
- 1998 · Hercules as Poseidon (voice)
- 1996 · The Hunchback of Notre Dame as Gargoyle Hugo (voice)
- 1996 · Muppets Tonight as Self
- 1996 · Remember WENN as Alan Ballinger
- 1995 · Star Trek: Voyager as Kurros
- 1994 · The Return of Jafar as Abis Mal - the Chief of the Thieves (voice)
- 1994 · Friends as Earl
- 1994 · North as North's Dad
- 1994 · Duckman as Duckman (voice)
- 1994 · Aladdin as Abis Mal (voice)
- 1994 · Aladdin as Captain Albatross (voice)
- 1994 · Aladdin as Abis Mal / Abnor Mal (voice)
- 1993 · The Nanny as Jack
- 1992 · The Larry Sanders Show as Jason Alexander
- 1991 · Dinosaurs as Grown Baby (voice)
- 1991 · Dinosaurs as Stu (voice)
- 1991 · Dinosaurs as Gus Molehill (voice)
- 1991 · Dinosaurs as The Job Wizard (voice)
- 1991 · Dinosaurs as General H. Norman Conquest (voice)
- 1991 · Dinosaurs as Sexual Harris (voice)
- 1991 · Dinosaurs as UFO! Host / Announcer (voice)
- 1990 · Dream On as Randall Townsend
- 1990 · Pretty Woman as Philip Stuckey
- 1989 · The Simpsons as Bourbon Verlander (voice)
- 1989 · Seinfeld as George Costanza
- 1988 · LIVE with Kelly and Mark as Self - Guest
- 1984 · E/R as Harold Stickley
- 1984 · E/R as
- 1984 · Jeopardy! as Self
- 1983 · Reading Rainbow as Self - Narrator (voice)
- 1982 · Newhart as
- 1982 · Late Night with David Letterman as Self
- 1975 · Saturday Night Live as Self - Host
- 1975 · Saturday Night Live as Self - Cameo (uncredited)
- 1975 · People's Choice Awards as Self - Host
- 1956 · Tony Awards as Self - Presenter
- 1944 · Golden Globe Awards as Self - Nominee
- Future · Saturday TV Funhouse as Titey (voice)
- 2026 · Jimmy as Louis B. Mayer
- 2025 · The Gettysburg Address as Noah Brooks (voice)
- 2025 · LEGO Marvel Avengers: Strange Tails as Magneto (voice)
- 2024 · Y llegaron de noche as Carl Laemmle
- 2023 · Dick Van Dyke: 98 Years of Magic as Self - Performer
- 2021 · Broadway: Beyond the Golden Age as Self
- 2017 · Hit the Road as Ken Swallow
- 2017 · Kody Kapow as Goji (voice)
- 2017 · Dinner with Dad as Jason Alexander
- 2016 · For the Love of Spock as Self
- 2016 · There's Something About Romcoms as Self
- 2016 · The Last Laugh as Self
- 2015 · Larry Gaye: Renegade Male Flight Attendant as Larry's Dad
- 2015 · Big Time in Hollywood, Fl as Jason Alexander
- 2015 · Misery Loves Comedy as Self
- 2012 · Stars in Shorts as Sid Rosenthal
- 2011 · A Fairly Odd Movie: Grow Up, Timmy Turner! as Cosmo
- 2010 · Quantum Quest: A Cassini Space Odyssey as Moronic (voice)
- 2008 · Shatner's Raw Nerve as Self
- 2007 · The Grand as Dr. Yakov Achmed
- 2007 · Thank God You're Here as Self
- 2006 · Farce of the Penguins as Penguin on Belly (voz)
- 2006 · Talkshow with Spike Feresten as
- 2006 · Comedy Central Roast of William Shatner as Self - Roastmaster
- 2006 · Snoop Dogg's Hood of Horror as British Record Mogul
- 2006 · Ira & Abby as Dr. Morris Saperstein
- 2006 · Where My Dogs At? as
- 2005 · The Aristocrats as Self
- 2004 · A Christmas Carol as Jacob Marley / Marley's Ghost
- 2004 · Kramer vs. Kramer: Kenny to Cosmo as Self
- 2003 · 101 Dalmatians II: Patch's London Adventure as Lightning (voice)
- 2002 · The Hunchback of Notre Dame II as Gargoyle Hugo (voice)
- 2001 · Bob Patterson as Bob Patterson
- 2001 · The Trumpet of the Swan as Father (voice)
- 2000 · The Adventures of Rocky & Bullwinkle as Boris
- 1999 · Madeline: Lost in Paris as Uncle Horst / Henri (voice)
- 1998 · Denial as Art Witz
- 1997 · Cinderella as Lionel
- 1996 · Dunston Checks In as Robert Grant
- 1995 · The Last Supper as Anti-Enviroment
- 1994 · Blankman as Mr. Stone
- 1994 · The Paper as Marion Sandusky
- 1993 · Coneheads as Larry Farber
- 1990 · Jacob's Ladder as Geary
- 1990 · White Palace as Neil
- 1988 · Favorite Son as Chris Van Allen
- 1987 · Everything's Relative as Julian Beeby
- 1986 · Brighton Beach Memoirs as Pool Player #1
- 1986 · The Mosquito Coast as Hardware Clerk
- 1986 · Rockabye as Lt. Ernest Foy
- 1981 · Senior Trip as Pete
- 1981 · The Burning as Dave
- 1980 · A Capitol Fourth as Self
- 1949 · The Emmy Awards as Self
- Future · Broadway: The Next Generation as Self
- 2025 · Paddy Chayefsky: Collector of Words as Self
- 2025 · Stealing Pulp Fiction as Dr. Mendelbaum
- 2022 · The Conspiracy as
- 2022 · Killing Me Softly with His Songs as Self
- 2022 · Out of Office as
- 2022 · Cinderella: The Reunion, A Special Edition of 20/20 as Self
- 2022 · Dunston Checks Out as Jason Alexander (archival footage)
- 2021 · History of the Sitcom as Self - Actor
- 2020 · The Rocky Horror Musical Live Stream as Narrator
- 2020 · Faith Based as Nicky Steele
- 2020 · My Boyfriend's Meds as Dr. Sternbach
- 2018 · The Portuguese Kid as Barry Dragonetti
- 2018 · Bucky and the Squirrels as Jason Alexander
- 2017 · The Truth Is in the Stars as Self
- 2016 · The Mark Lembeck Technique as Mark Lembeck
- 2016 · Best Worst Thing That Ever Could Have Happened... as Self
- 2016 · Tom and Jerry: Back to Oz as Mr. Bibb / The Nome King (voice)
- 2015 · China, Il The Musical as Harold
- 2014 · How Murray Saved Christmas as Doc Holiday (voice)
- 2014 · Lucky Stiff as Vinnie Di Ruzzio
- 2012 · National Lampoon's Another Dirty Movie as Self (uncredited)
- 2012 · Say It Ain't Solo as Self
- 2011 · The Voyages of Young Doctor Dolittle as Eugene (voice)
- 2011 · Dora the Explorer: Dora's Enchanted Forest Adventures as Owl (voice)
- 2010 · Not Your Time as Sid Rosenthal
- 2010 · Rock Slyde as Mailman Stan
- 2008 · Step It Up and Dance as
- 2007 · Jerry Seinfeld: Submarine Captain as Self
- 2006 · How to Go Out on a Date in Queens as Johnny
- 2005 · Earth to America as self
- 2004 · The Seinfeld Story as Self
- 2004 · Seinfeld: How It Began as Self/George Costanza
- 2003 · The Very Best of America's Funniest Comedians as Self (archive footage)
- 2002 · The Man Who Saved Christmas as A.C. Gilbert
- 2001 · Being 'Shallow Hal' as Self
- 2001 · On Edge as Zamboni Phil
- 2001 · Bravo Profiles: Penn and Teller as Self
- 2000 · Let's Rap Fire Safety as
- 1999 · Ultimate Trek: Star Trek's Greatest Moments as Host
- 1999 · The N.Y. Friars Club Roast of Jerry Stiller as Self - Roastmaster
- 1999 · Larry David: Curb Your Enthusiasm as Self
- 1999 · Love and Action in Chicago as Frank Bonner
- 1999 · Sideshow: Alive on the Inside as Narrator
- 1999 · Jingle Bells as Elf (Voice)
- 1998 · Titey as Titey (voice)
- 1997 · Love! Valour! Compassion! as Buzz Hauser
- 1996 · The Making of Disney's The Hunchback of Notre Dame as
- 1995 · Bye Bye Birdie as Albert J. Peterson
- 1995 · For Better or Worse as Michael Makeshift
- 1995 · A Tribute to Stephen Sondheim as
- 1994 · Down on the Waterfront as
- 1992 · I Don't Buy Kisses Anymore as Bernie Fishbine
- Future · The Sisters Rosensweig as Mervyn
- Future · Leo 2 as
- 1993 · Sexual Healing as Frank
- 1993 · For Goodness Sake as Electronics Store Customer