Jason Alexander
Acting
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
Acting209
movieJimmy
2026
Louis B. Mayer
tvMating Season
2026
Alan (voice)
movieThe Gettysburg Address
2025
Noah Brooks (voice)
tvLEGO Marvel Avengers: Strange Tails
2025
Magneto (voice)
tvThe Bad Guys: The Series
2025
Mysterious Figure (voice) / D.B. Cougar (voice)
movieStealing Pulp Fiction
2025
Dr. Mendelbaum
movieThe Electric State
2025
Ted / Wingman
tvY llegaron de noche
2024
Carl Laemmle
tvRock, Paper, Scissors
2024
Jonathan Fartjoke (voice)
movieDick Van Dyke: 98 Years of Magic
2023
Self - Performer
movieLeo
2023
Jayda's Dad (voice)
tvHistory of the World: Part II
2023
Maurice Cheeks
movieDunston Checks Out
2022
Jason Alexander (archival footage)
tvStar Trek: Prodigy
2021
Doctor Noum (voice) / Counselor Noum (voice)
tvThe Problem with Jon Stewart
2021
Jeff Bezos
tvHistory of the Sitcom
2021
Self - Actor
tvCelebrity Wheel of Fortune
2021
Self - Contestant
movieFaith Based
2020
Nicky Steele
tvStars in the House
2020
Self / Self - Special Guest
movieMy Boyfriend's Meds
2020
Dr. Sternbach
tvHarley Quinn
2019
Sy Borgman (voice)
tvMad About You
2019
Jason Alexander
tvThe Conners
2018
Pastor Phil
movieThe Portuguese Kid
2018
Barry Dragonetti
movieBucky and the Squirrels
2018
Jason Alexander
tvHit the Road
2017
Ken Swallow
tvYoung Sheldon
2017
Gene Lundy
tvKody Kapow
2017
Goji (voice)
tvThe Marvelous Mrs. Maisel
2017
Asher Friedman
tvDinner with Dad
2017
Jason Alexander
movieThe Mark Lembeck Technique
2016
Mark Lembeck
tvMatch Game
2016
Self - Panelist
movieTom and Jerry: Back to Oz
2016
Mr. Bibb / The Nome King (voice)
tvTo Tell the Truth
2016
Self - Panelist
movieThe Last Laugh
2016
Self (archive footage) (uncredited)
tvThe Grinder
2015
Cliff Bemis
tvThe Late Show with Stephen Colbert
2015
Self - Guest
tvBig Time in Hollywood, Fl
2015
Jason Alexander
movieWild Card
2015
Pinky
movieHow Murray Saved Christmas
2014
Doc Holiday (voice)
tvPenn Zero: Part-Time Hero
2014
Coach Wallace (voice)
movieLucky Stiff
2014
Vinnie Di Ruzzio
tvThe Tom and Jerry Show
2014
Rick (voice)
tvTripTank
2014
Doctor (voice)
tvLate Night with Seth Meyers
2014
Self - Guest
tvKirstie
2013
Stanford Temple
tvDrunk History
2013
William Tweed
movieStars in Shorts
2012
Sid Rosenthal
tvComedy Bang! Bang!
2012
Inspector Gantlet
movieNational Lampoon's Another Dirty Movie
2012
Self (uncredited)
movieThe Voyages of Young Doctor Dolittle
2011
Eugene (voice)
tvChina, IL
2011
Harold (voice)
tvFranklin & Bash
2011
Carter Lang
tvHarry's Law
2011
Richard Cross
movieNot Your Time
2010
Sid Rosenthal
movieQuantum Quest: A Cassini Space Odyssey
2010
Moronic (voice)
tvFish Hooks
2010
Mr. Nibbles / Mr. Nibbles (voice)
movieRock Slyde
2010
Mailman Stan
The Marriage Ref
2010
Self - Panelist
tvCommunity
2009
Mountain Man
tvMeteor
2009
Dr. Chetwyn
movieThe Grand
2007
Dr. Yakov Achmed
movieFarce of the Penguins
2006
Penguin on Belly (voice)
tvRachael Ray
2006
Self - Guest
movieComedy Central Roast of William Shatner
2006
Self - Roastmaster
movieSnoop Dogg's Hood of Horror
2006
British Record Mogul
movieIra & Abby
2006
Dr. Morris Saperstein
tvEverybody Hates Chris
2005
Principal Edwards
tvCriminal Minds
2005
Prof. Rothchild
tvRobot Chicken
2005
Krampus (voice)
tvAmerican Dad!
2005
Mr. Orlando (voice) / Sal (voice)
movieA Christmas Carol
2004
Jacob Marley / Marley's Ghost
movieSeinfeld: How It Began
2004
Self/George Costanza
tvListen Up!
2004
Tony Kleinman
The Tony Danza Show
2004
Self - Guest
tvTwo and a Half Men
2003
Dr. Goodman
movieThe Very Best of America's Funniest Comedians
2003
Self (archive footage)
movie101 Dalmatians II: Patch's London Adventure
2003
Lightning (voice)
movieThe Man Who Saved Christmas
2002
A.C. Gilbert
tvThe Twilight Zone
2002
Patient
tvMonk
2002
Marty Eels
movieThe Hunchback of Notre Dame II
2002
Gargoyle Hugo (voice)
movieShallow Hal
2001
Mauricio Wilson / Harold Stickley
tvBob Patterson
2001
Bob Patterson
tvThe Legend of Tarzan
2001
Zutho (voice)
movieOn Edge
2001
Zamboni Phil
movieThe Trumpet of the Swan
2001
Father (voice)
tvCurb Your Enthusiasm
2000
Jason Alexander
tvMalcolm in the Middle
2000
Leonard
movieThe N.Y. Friars Club Roast of Jerry Stiller
1999
Self - Roastmaster
movieLove and Action in Chicago
1999
Frank Bonner
movieMadeline: Lost in Paris
1999
Uncle Horst / Henri (voice)
tvThe Late Late Show with Craig Kilborn
1999
Self - Guest
tvDilbert
1999
Catbert (voice)
movieJingle Bells
1999
Elf (Voice)
tvHollywood Squares
1998
Self - Panelist
tvHercules
1998
Poseidon / Poseidon (voice)
movieDenial
1998
Art Witz
movieTitey
1998
Titey (voice)
movieCinderella
1997
Lionel
movieLove! Valour! Compassion!
1997
Buzz Hauser
movieThe Hunchback of Notre Dame
1996
Gargoyle Hugo (voice)
tvRemember WENN
1996
Alan Ballinger
movieDunston Checks In
1996
Robert Grant
movieBye Bye Birdie
1995
Albert J. Peterson
movieThe Last Supper
1995
Anti-Enviroment
movieFor Better or Worse
1995
Michael Makeshift
tvStar Trek: Voyager
1995
Kurros
movieThe Return of Jafar
1994
Abis Mal - the Chief of the Thieves (voice)
tvFriends
1994
Earl
movieBlankman
1994
Mr. Stone
movieNorth
1994
North's Dad
movieThe Paper
1994
Marion Sandusky
tvDuckman
1994
Duckman (voice)
tvAladdin
1994
Abis Mal (voice) / Captain Albatross (voice) / Abis Mal / Abnor Mal (voice)
tvThe Nanny
1993
Jack
movieConeheads
1993
Larry Farber
movieFor Goodness Sake
1993
Electronics Store Customer
tvThe Larry Sanders Show
1992
Jason Alexander
movieI Don't Buy Kisses Anymore
1992
Bernie Fishbine
tvDinosaurs
1991
Grown Baby (voice) / Stu (voice) / Gus Molehill (voice) / The Job Wizard (voice) / General H. Norman Conquest (voice) / Sexual Harris (voice) / UFO! Host / Announcer (voice)
tvDream On
1990
Randall Townsend
moviePretty Woman
1990
Philip Stuckey
tvThe Simpsons
1989
Bourbon Verlander (voice)
tvSeinfeld
1989
George Costanza
tvFavorite Son
1988
Chris Van Allen
tvLIVE with Kelly and Mark
1988
Self - Guest
tvEverything's Relative
1987
Julian Beeby
movieBrighton Beach Memoirs
1986
Pool Player #1
movieThe Mosquito Coast
1986
Hardware Clerk
movieRockabye
1986
Lt. Ernest Foy
tvJeopardy!
1984
Self
tvReading Rainbow
1983
Self - Narrator (voice)
tvSaturday Night Live
1975
Self - Host / Titey (voice) / Self (uncredited)
tvPeople's Choice Awards
1975
Self - Host
tvTony Awards
1956
Self - Presenter
tvGolden Globe Awards
1944
Self - Nominee
tvSaturday TV Funhouse
Titey (voice)
Directing9
tvYoung Sheldon
2017
Director
tvMike & Molly
2010
Director
tvCampus Ladies
2006
Director
tvEverybody Hates Chris
2005
Director
tvCriminal Minds
2005
Director
movieJust Looking
1999
Director
tvRemember WENN
1996
Director
movieFor Better or Worse
1995
Director
tvSeinfeld
1989
Director
Production4
movieThe Mark Lembeck Technique
2016
Consulting Producer
movieAgent Cody Banks 2: Destination London
2004
Executive Producer
movieAgent Cody Banks
2003
Executive Producer
tvBob Patterson
2001
Executive Producer
Writing2
tvDinner with Dad
2017
Writer
tvBob Patterson
2001
Story, Teleplay
Creator1
tvBob Patterson
2001
Creator