Jason Alexander
Acting • Born 1959-09-23
Biography
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.
Filmography
222 credits
Pretty Woman
Movie • 1990
Philip Stuckey
Leo
Movie • 2023
Jayda's Dad (voice)
The Hunchback of Notre Dame
Movie • 1996
Gargoyle Hugo (voice)
Jacob's Ladder
Movie • 1990
Geary
The Last Supper
Movie • 1995
Anti-Enviroment
Brighton Beach Memoirs
Movie • 1986
Pool Player #1
Blankman
Movie • 1994
Mr. Stone
The Mosquito Coast
Movie • 1986
Hardware Clerk
The Burning
Movie • 1981
Dave
North
Movie • 1994
North's Dad
Quantum Quest: A Cassini Space Odyssey
Movie • 2010
Moronic (voice)
The Paper
Movie • 1994
Marion Sandusky
The Hunchback of Notre Dame II
Movie • 2002
Gargoyle Hugo (voice)
Farce of the Penguins
Movie • 2006
Penguin on Belly (voz)
Coneheads
Movie • 1993
Larry Farber
Shallow Hal
Movie • 2001
Mauricio Wilson
Hachi: A Dog's Tale
Movie • 2009
Carl
101 Dalmatians II: Patch's London Adventure
Movie • 2003
Lightning (voice)
White Palace
Movie • 1990
Neil
A Christmas Carol
Movie • 2004
Jacob Marley / Marley's Ghost
Bye Bye Birdie
Movie • 1995
Albert J. Peterson
Cinderella
Movie • 1997
Lionel
The Aristocrats
Movie • 2005
Self
Snoop Dogg's Hood of Horror
Movie • 2006
British Record Mogul
Rock Slyde
Movie • 2010
Mailman Stan
The Man Who Saved Christmas
Movie • 2002
A.C. Gilbert
Denial
Movie • 1998
Art Witz
For Goodness Sake
Movie • 1993
Electronics Store Customer
Love! Valour! Compassion!
Movie • 1997
Buzz Hauser
Dunston Checks In
Movie • 1996
Robert Grant
Titey
Movie • 1998
Titey (voice)
The Adventures of Rocky & Bullwinkle
Movie • 2000
Boris
There's Something About Romcoms
Movie • 2016
Self
A Fairly Odd Movie: Grow Up, Timmy Turner!
Movie • 2011
Cosmo
I Don't Buy Kisses Anymore
Movie • 1992
Bernie Fishbine
The Trumpet of the Swan
Movie • 2001
Father (voice)
How to Go Out on a Date in Queens
Movie • 2006
Johnny
For Better or Worse
Movie • 1995
Michael Makeshift
Stars in Shorts
Movie • 2012
Sid Rosenthal
The Voyages of Young Doctor Dolittle
Movie • 2011
Eugene (voice)
Jerry Seinfeld: Submarine Captain
Movie • 2007
Self
The Last Laugh
Movie • 2016
Self
Rockabye
Movie • 1986
Lt. Ernest Foy
Madeline: Lost in Paris
Movie • 1999
Uncle Horst / Henri (voice)
Down on the Waterfront
Movie • 1994
Wild Card
Movie • 2015
Pinky
The Electric State
Movie • 2025
Ted / Wingman
Cinderella: The Reunion, A Special Edition of 20/20
Movie • 2022
Self
Out of Office
Movie • 2022
The Return of Jafar
Movie • 1994
Abis Mal - the Chief of the Thieves (voice)
Lucky Stiff
Movie • 2014
Vinnie Di Ruzzio
Dick Van Dyke: 98 Years of Magic
Movie • 2023
Self - Performer
Jingle Bells
Movie • 1999
Elf (Voice)
Misery Loves Comedy
Movie • 2015
Self
Earth to America
Movie • 2005
self
National Lampoon's Another Dirty Movie
Movie • 2012
Self (uncredited)
Not Your Time
Movie • 2010
Sid Rosenthal
Sideshow: Alive on the Inside
Movie • 1999
Narrator
Comedy Central Roast of William Shatner
Movie • 2006
Self - Roastmaster
Killing Me Softly with His Songs
Movie • 2022
Self
Ira & Abby
Movie • 2006
Dr. Morris Saperstein
Seinfeld: How It Began
Movie • 2004
Self/George Costanza
The Conspiracy
Movie • 2022
Larry Gaye: Renegade Male Flight Attendant
Movie • 2015
Larry's Dad
Broadway: The Next Generation
Movie
Self
Sex, Censorship and the Silver Screen
Movie • 1996
Quote Reader
The Grand
Movie • 2007
Dr. Yakov Achmed
Sexual Healing
Movie • 1993
Frank
How Murray Saved Christmas
Movie • 2014
Doc Holiday (voice)
Dora the Explorer: Dora's Enchanted Forest Adventures
Movie • 2011
Owl (voice)
The Very Best of America's Funniest Comedians
Movie • 2003
Self (archive footage)
Say It Ain't Solo
Movie • 2012
Self
Stealing Pulp Fiction
Movie • 2025
Dr. Mendelbaum
Ultimate Trek: Star Trek's Greatest Moments
Movie • 1999
Host
For the Love of Spock
Movie • 2016
Self
Let's Rap Fire Safety
Movie • 2000
Best Worst Thing That Ever Could Have Happened...
Movie • 2016
Self
The Truth Is in the Stars
Movie • 2017
Self
Bucky and the Squirrels
Movie • 2018
Jason Alexander
Larry David: Curb Your Enthusiasm
Movie • 1999
Self
The N.Y. Friars Club Roast of Jerry Stiller
Movie • 1999
Self - Roastmaster
My Boyfriend's Meds
Movie • 2020
Dr. Sternbach
Love and Action in Chicago
Movie • 1999
Frank Bonner
The Portuguese Kid
Movie • 2018
Barry Dragonetti
Faith Based
Movie • 2020
Nicky Steele
The Gettysburg Address
Movie • 2025
Noah Brooks (voice)
Senior Trip
Movie • 1981
Pete
Being 'Shallow Hal'
Movie • 2001
Self
Tom and Jerry: Back to Oz
Movie • 2016
Mr. Bibb / The Nome King (voice)
The Rocky Horror Musical Live Stream
Movie • 2020
Narrator
The Sisters Rosensweig
Movie
Mervyn
The Mark Lembeck Technique
Movie • 2016
Mark Lembeck
Broadway: Beyond the Golden Age
Movie • 2021
Self
Leo 2
Movie
The Seinfeld Story
Movie • 2004
Self
A Tribute to Stephen Sondheim
Movie • 1995
China, Il The Musical
Movie • 2015
Harold
Paddy Chayefsky: Collector of Words
Movie • 2025
Self
Dunston Checks Out
Movie • 2022
Jason Alexander (archival footage)
Jimmy
Movie • 2026
Louis B. Mayer
Bravo Profiles: Penn and Teller
Movie • 2001
Self
On Edge
Movie • 2001
Zamboni Phil
Kramer vs. Kramer: Kenny to Cosmo
Movie • 2004
Self
Talkshow with Spike Feresten
TV • 2006
Duckman
TV • 1994
Duckman (voice)
Son of the Beach
TV • 2000
Everybody Hates Chris
TV • 2005
Principal Edwards
Seinfeld
TV • 1989
George Costanza
The Ellen DeGeneres Show
TV • 2003
Self
The Tony Danza Show
TV • 2004
Self - Guest
Dream On
TV • 1990
Randall Townsend
Jimmy Kimmel Live!
TV • 2003
Self
Star Trek: Voyager
TV • 1995
Kurros
Friends
TV • 1994
Earl
Monk
TV • 2002
Marty Eels
The Larry Sanders Show
TV • 1992
Jason Alexander
The Legend of Tarzan
TV • 2001
Zutho (voice)
Disney's House of Mouse
TV • 2001
Dinosaurs
TV • 1991
Grown Baby (voice)
Aladdin
TV • 1994
Abis Mal (voice)
Hercules
TV • 1998
Poseidon
E/R
TV • 1984
Harold Stickley
Newhart
TV • 1982
The New Adventures of Old Christine
TV • 2006
Dr. Palmer
Late Night with David Letterman
TV • 1982
Self
The Huntress
TV • 2000
Muppets Tonight
TV • 1996
Self
Bob Patterson
TV • 2001
Bob Patterson
Listen Up!
TV • 2004
Tony Kleinman
E/R
TV • 1984
The Late Late Show with Craig Ferguson
TV • 2005
Self
Everything's Relative
TV • 1987
Julian Beeby
Where My Dogs At?
TV • 2006
Step It Up and Dance
TV • 2008
The Cleveland Show
TV • 2009
The Marriage Ref
TV • 2010
Self - Panelist
The Late Late Show with Craig Kilborn
TV • 1999
Self - Guest
Good Day Live
TV • 2001
Self
The Emmy Awards
TV • 1949
Self
Fish Hooks
TV • 2010
Mr. Nibbles
Meteor
TV • 2009
Dr. Chetwyn
Saturday Night Live
TV • 1975
Self - Host
Critics Choice Awards
TV • 2001
Self
Community
TV • 2009
Mountain Man
American Dad!
TV • 2005
Mr. Orlando (voice)
The Movies That Made Us
TV • 2019
Self
Comedy Bang! Bang!
TV • 2012
Inspector Gantlet
Drunk History
TV • 2013
William Tweed
The Grinder
TV • 2015
Cliff Bemis
Two and a Half Men
TV • 2003
Dr. Goodman
Favorite Son
TV • 1988
Chris Van Allen
Late Night with Seth Meyers
TV • 2014
Self - Guest
Talking Dead
TV • 2011
Self
The Late Late Show with James Corden
TV • 2015
Self
Aladdin
TV • 1994
Captain Albatross (voice)
Aladdin
TV • 1994
Abis Mal / Abnor Mal (voice)
Big Time in Hollywood, Fl
TV • 2015
Jason Alexander
The Twilight Zone
TV • 2002
Patient
The Tom and Jerry Show
TV • 2014
Rick (voice)
Dinosaurs
TV • 1991
Stu (voice)
Hollywood Squares
TV • 1998
Self - Panelist
Penn Zero: Part-Time Hero
TV • 2014
Coach Wallace (voice)
Fish Hooks
TV • 2010
Mr. Nibbles (voice)
History of the Sitcom
TV • 2021
Self - Actor
Reading Rainbow
TV • 1983
Self - Narrator (voice)
Hit the Road
TV • 2017
Ken Swallow
Dinner with Dad
TV • 2017
Jason Alexander
The Marvelous Mrs. Maisel
TV • 2017
Asher Friedman
TripTank
TV • 2014
Doctor (voice)
Match Game
TV • 2016
Self - Panelist
Shatner's Raw Nerve
TV • 2008
Self
The $100,000 Pyramid
TV • 2016
Self
Kody Kapow
TV • 2017
Goji (voice)
Criminal Minds
TV • 2005
Prof. Rothchild
Harley Quinn
TV • 2019
Sy Borgman (voice)
The Orville
TV • 2017
Olix
Dinosaurs
TV • 1991
Gus Molehill (voice)
Dinosaurs
TV • 1991
The Job Wizard (voice)
Dinosaurs
TV • 1991
General H. Norman Conquest (voice)
Dinosaurs
TV • 1991
Sexual Harris (voice)
Dinosaurs
TV • 1991
UFO! Host / Announcer (voice)
Comedians in Cars Getting Coffee
TV • 2012
Self
Rachael Ray
TV • 2006
Self - Guest
The Conners
TV • 2018
Pastor Phil
Star Trek: Prodigy
TV • 2021
Doctor Noum (voice)
China, IL
TV • 2011
Harold (voice)
Dilbert
TV • 1999
Catbert (voice)
Stars in the House
TV • 2020
Self
Stars in the House
TV • 2020
Self - Special Guest
Saturday Night Live
TV • 1975
Self - Cameo (uncredited)
Young Sheldon
TV • 2017
Gene Lundy
A Capitol Fourth
TV • 1980
Self
Robot Chicken
TV • 2005
Krampus (voice)
Curb Your Enthusiasm
TV • 2000
Jason Alexander
The Simpsons
TV • 1989
Bourbon Verlander (voice)
American Dad!
TV • 2005
Sal (voice)
Real Time with Bill Maher
TV • 2003
Self
Kirstie
TV • 2013
Stanford Temple
Hollywood Game Night
TV • 2013
Self
Mad About You
TV • 2019
Jason Alexander
Primetime Glick
TV • 2001
History of the World: Part II
TV • 2023
Maurice Cheeks
LIVE with Kelly and Mark
TV • 1988
Self - Guest
Star Trek: Prodigy
TV • 2021
Counselor Noum (voice)
Saturday TV Funhouse
TV
Titey (voice)
Rock, Paper, Scissors
TV • 2023
Jonathan Fartjoke (voice)
Hercules
TV • 1998
Poseidon (voice)
To Tell the Truth
TV • 2016
Self - Panelist
Malcolm in the Middle
TV • 2000
Leonard
Thank God You're Here
TV • 2007
Self
Celebrity Wheel of Fortune
TV • 2021
Self - Contestant
Y llegaron de noche
TV • 2024
Carl Laemmle
Remember WENN
TV • 1996
Alan Ballinger
Harry's Law
TV • 2011
Richard Cross
The Problem with Jon Stewart
TV • 2021
Jeff Bezos
Franklin & Bash
TV • 2011
Carter Lang
The Nanny
TV • 1993
Jack
Jeopardy!
TV • 1984
Self
Golden Globe Awards
TV • 1944
Self - Nominee
The Bad Guys: The Series
TV • 2025
Mysterious Figure (voice)
LEGO Marvel Avengers: Strange Tails
TV • 2025
Magneto (voice)
People's Choice Awards
TV • 1975
Self - Host