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.
Known For
Leo
(2023)
Jayda's Dad (voice)
Pretty Woman
(1990)
Philip Stuckey
Wild Card
(2015)
Pinky
The Hunchback of Notre Dame
(1996)
Gargoyle Hugo (voice)
Hachi: A Dog's Tale
(2009)
Carl
The Return of Jafar
(1994)
Abis Mal - the Chief of the Thieves (voice)
101 Dalmatians II: Patch's London Adventure
(2002)
Lightning (voice)
The Hunchback of Notre Dame II
(2002)
Gargoyle Hugo (voice)
Shallow Hal
(2001)
Mauricio
Jacob's Ladder
(1990)
Geary
Coneheads
(1993)
Larry Farber
White Palace
(1990)
Neil
A Fairly Odd Movie: Grow Up, Timmy Turner!
(2011)
Cosmo
The Paper
(1994)
Marion Sandusky
Tom and Jerry: Back to Oz
(2016)
Mr. Bibb / The Nome King (voice)
The Adventures of Rocky & Bullwinkle
(2000)
Boris
Full Filmography
Acting
The Burning
(1981)
Dave
Senior Trip
(1981)
Pete
The Mosquito Coast
(1986)
Hardware Clerk
Rockabye
(1986)
Lt. Ernest Foy
Brighton Beach Memoirs
(1986)
Pool Player #1
Pretty Woman
(1990)
Philip Stuckey
Jacob's Ladder
(1990)
Geary
White Palace
(1990)
Neil
I Don't Buy Kisses Anymore
(1992)
Bernie Fishbine
Coneheads
(1993)
Larry Farber
For Goodness Sake
(1993)
Electronics Store Customer
Sexual Healing
(1993)
Frank
Blankman
(1994)
Mr. Stone
North
(1994)
North's Dad
The Paper
(1994)
Marion Sandusky
Down on the Waterfront
(1994)
The Return of Jafar
(1994)
Abis Mal - the Chief of the Thieves (voice)
Bye Bye Birdie
(1995)
Albert J. Peterson
For Better or Worse
(1995)
Michael Makeshift
The Last Supper
(1995)
Anti-Enviroment
Dunston Checks In
(1996)
Robert Grant
Sex, Censorship and the Silver Screen
(1996)
Quote Reader
The Hunchback of Notre Dame
(1996)
Gargoyle Hugo (voice)
Cinderella
(1997)
Lionel
Love! Valour! Compassion!
(1997)
Buzz Hauser
Denial
(1998)
Art Witz
Titey
(1998)
Titey (voice)
Madeline: Lost in Paris
(1999)
Uncle Horst / Henri (voice)
Jingle Bells
(1999)
Elf (Voice)
Ultimate Trek: Star Trek's Greatest Moments
(1999)
Host
Larry David: Curb Your Enthusiasm
(1999)
Self
The N.Y. Friars Club Roast of Jerry Stiller
(1999)
Self - Roastmaster
Love and Action in Chicago
(1999)
Frank Bonner
Sideshow: Alive on the Inside
(1999)
Narrator
The Adventures of Rocky & Bullwinkle
(2000)
Boris
Let's Rap Fire Safety
(2000)
Shallow Hal
(2001)
Mauricio
The Trumpet of the Swan
(2001)
Father (voice)
Being 'Shallow Hal'
(2001)
Self
101 Dalmatians II: Patch's London Adventure
(2002)
Lightning (voice)
The Man Who Saved Christmas
(2002)
A.C. Gilbert
The Hunchback of Notre Dame II
(2002)
Gargoyle Hugo (voice)
The Very Best of America's Funniest Comedians
(2003)
Self (archive footage)
A Christmas Carol
(2004)
Jacob Marley / Marley's Ghost
Seinfeld: How It Began
(2004)
Himself/George Costanza
The Aristocrats
(2005)
Self
Earth to America
(2005)
self
Snoop Dogg's Hood of Horror
(2006)
British Record Mogul
How to Go Out on a Date in Queens
(2006)
Johnny
Ira & Abby
(2006)
Dr. Morris Saperstein
Comedy Central Roast of William Shatner
(2006)
Self - Roastmaster
Farce of the Penguins
(2007)
Penguin on Belly (voice)
Jerry Seinfeld: Submarine Captain
(2007)
Himself
The Grand
(2007)
Dr. Yakov Achmed
Hachi: A Dog's Tale
(2009)
Carl
Quantum Quest: A Cassini Space Odyssey
(2010)
Moronic (voice)
Rock Slyde
(2010)
Mailman Stan
Not Your Time
(2010)
Sid Rosenthal
A Fairly Odd Movie: Grow Up, Timmy Turner!
(2011)
Cosmo
The Voyages of Young Doctor Dolittle
(2011)
Eugene (voice)
Say It Ain't Solo
(2012)
Himself
Stars In Shorts
(2012)
Sid Rosenthal
Another Dirty Movie
(2012)
Self (uncredited)
Lucky Stiff
(2014)
Vinnie Di Ruzzio
How Murray Saved Christmas
(2014)
Doc Holiday (voice)
Misery Loves Comedy
(2015)
Self
Wild Card
(2015)
Pinky
Larry Gaye: Renegade Male Flight Attendant
(2015)
Larry's Dad
The Gettysburg Address
(2015)
Noah Brooks (voice)
For the Love of Spock
(2016)
Himself
Best Worst Thing That Ever Could Have Happened...
(2016)
Self
Tom and Jerry: Back to Oz
(2016)
Mr. Bibb / The Nome King (voice)
The Mark Lembeck Technique
(2016)
Mark Lembeck
There's Something About Romcoms
(2016)
Self
The Last Laugh
(2016)
Self
They're Real & They're Spectacular: Seinfeld Super Fans & The Summer of George
(2016)
George Costanza (archive footage)
The Truth Is in the Stars
(2017)
Self
Broadway: The Next Generation
(2017)
Bucky and the Squirrels
(2018)
Jason Alexander
The Portuguese Kid
(2018)
Barry Dragonetti
My Boyfriend's Meds
(2020)
Dr. Sternbach
Faith Based
(2020)
Nicky Steele
The Rocky Horror Musical Live Stream
(2020)
Narrator
Broadway: Beyond the Golden Age
(2021)
Self
Cinderella: The Reunion, A Special Edition of 20/20
(2022)
Self
Out of Office
(2022)
Killing Me Softly with His Songs
(2022)
Self
The Conspiracy
(2022)
Leo
(2023)
Jayda's Dad (voice)
Dick Van Dyke: 98 Years of Magic
(2023)
Self - Performer
Directing
Production