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