Jason Alexander
Acting
🎂 1959-09-23
Jay Scott Greenspan, 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.
Cast credits(215)
Bourbon Verlander (voice)
1989
Prof. Rothchild
2005
Dr. Goodman
2003
Mr. Orlando (voice)
2005
Sal (voice)
2005
Earl
1994
Gene Lundy
2017
Marty Eels
2002
George Costanza
1989
Self
2003
Leonard
2000
Jason Alexander
2000
Self
2014
Kurros
1995
Asher Friedman
2017
Self - Host
1975
Self - Cameo (uncredited)
1975
Mountain Man
2009
Self - Presenter
1956
Olix
2017
Self
2015
2005
Self
2005
Krampus (voice)
2005
Sy Borgman (voice)
2019
Rick (voice)
2014
Grown Baby (voice)
1991
Stu (voice)
1991
Gus Molehill (voice)
1991
The Job Wizard (voice)
1991
General H. Norman Conquest (voice)
1991
Sexual Harris (voice)
1991
UFO! Host / Announcer (voice)
1991
2009
1982
Self
2003
Poseidon
1998
Poseidon (voice)
1998
Self - Guest
1988
Self - Guest
2004
Patient
2002
Abis Mal (voice)
1994
Captain Albatross (voice)
1994
Abis Mal / Abnor Mal (voice)
1994
Mr. Nibbles
2010
Mr. Nibbles (voice)
2010
Self
2003
Inspector Gantlet
2012
Ted / Wingman
2025
William Tweed
2013
Gargoyle Hugo (voice)
1996
Pastor Phil
2018
Coach Wallace (voice)
2014
Duckman (voice)
1994
Self
2012
Philip Stuckey
1990
Self - Narrator (voice)
1983
Pinky
2015
Zutho (voice)
2001
Self
1982
Jayda's Dad (voice)
2023
Self
2011
Jason Alexander
1992
Carter Lang
2011
2001
Self
2020
Self - Special Guest
2020
Carl
2009
Doctor Noum (voice)
2021
Counselor Noum (voice)
2021
Self - Panelist
2016
Self - Panelist
1998
Self
1998
Dr. Palmer
2006
Richard Cross
2011
Mauricio
2001
Self - Panelist
2016
Self
2001
Jonathan Fartjoke (voice)
2024
Maurice Cheeks
2023
Larry Farber
1993
Self
2016
Self
2019
2000
Self - Guest
1999
Lightning (voice)
2003
2000
Randall Townsend
1990
Geary
1990
Louis B. Mayer
2026
Self - Contestant
2021
Doctor (voice)
2014
Self (uncredited)
2012
Abis Mal - the Chief of the Thieves (voice)
1994
Self
2013
Alan Ballinger
1996
Gargoyle Hugo (voice)
2002
Catbert (voice)
1999
Carl Laemmle
2024
Anti-Enviroment
1995
Self
2001
Self - Panelist
2010
Neil
1990
Cliff Bemis
2015
Self
1996
Hardware Clerk
1986
Lionel
1997
Dr. Yakov Achmed
2007
2001
Harold Stickley
1984
1984
Cosmo
2011
Robert Grant
1996
Dr. Mendelbaum
2025
Self - Guest
2006
Jeff Bezos
2021
Tony Kleinman
2004
Pete
1981
Self
2025
North's Dad
1994
Harold
2015
2022
Boris
2000
Harold (voice)
2011
Mr. Bibb / The Nome King (voice)
2016
Dave
1981
Self
2005
Marion Sandusky
1994
Mr. Stone
1994
Self
2022
Pool Player #1
1986
1995
2022
Self
2021
Art Witz
1998
Jacob Marley / Marley's Ghost
2004
Buzz Hauser
1997
Self
2016
Self
2008
Dr. Sternbach
2020
Jason Alexander
2019
Bob Patterson
2001
Dr. Chetwyn
2009
Vinnie Di Ruzzio
2014
Sid Rosenthal
2012
British Record Mogul
2006
Noah Brooks (voice)
2025
Titey (voice)
1998
Self
2017
2006
Quote Reader
1996
Mark Lembeck
2016
Johnny
2006
Father (voice)
2001
Self
2017
Stanford Temple
2013
Self
1999
Self
2001
Self (archive footage)
2003
self
2005
Mailman Stan
2010
Self
2015
Lt. Ernest Foy
1986
Host
1999
Self
2016
Mervyn
Michael Makeshift
1995
Narrator
2020
Self
2004
Penguin on Belly (voice)
2006
Bernie Fishbine
1992
Narrator
1999
Frank Bonner
1999
Larry's Dad
2015
Moronic (voice)
2010
Jason Alexander
2018
Self - Roastmaster
1999
Himself
2007
Self
2016
Uncle Horst / Henri (voice)
1999
Elf (Voice)
1999
Nicky Steele
2020
Self - Roastmaster
2006
Jason Alexander
2015
Doc Holiday (voice)
2014
Self/George Costanza
2004
Chris Van Allen
1988
Dr. Morris Saperstein
2006
Albert J. Peterson
1995
Himself
2012
Self
2016
Self
2022
Ken Swallow
2017
Electronics Store Customer
1993
Owl (voice)
2011
Jason Alexander (archival footage)
2022
Julian Beeby
1987
Sid Rosenthal
2010
Self - Actor
2021
Eugene (voice)
2011
Frank
1993
Self
2007
Self
1949
Barry Dragonetti
2018
Goji (voice)
2017
A.C. Gilbert
2002
1994
2006
2008
Self
1980
2000
Titey (voice)
Jason Alexander
2017
Self - Performer
2023
