Jason Alexander
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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
Credits
Pretty Woman (1990)
as Philip Stuckey
Hachi: A Dog's Tale (2009)
as Carl
Shallow Hal (2001)
as Mauricio Wilson
The Hunchback of Notre Dame (1996)
as Gargoyle Hugo (voice)
Wild Card (2015)
as Pinky
The Electric State (2025)
as Ted / Wingman
Leo (2023)
as Jayda's Dad (voice)
Jacob's Ladder (1990)
as Geary
The Return of Jafar (1994)
as Abis Mal - the Chief of the Thieves (voice)
White Palace (1990)
as Neil
Coneheads (1993)
as Larry Farber
101 Dalmatians II: Patch's London Adventure (2003)
as Lightning (voice)
The Hunchback of Notre Dame II (2002)
as Gargoyle Hugo (voice)
The Burning (1981)
as Dave
The Paper (1994)
as Marion Sandusky
North (1994)
as North's Dad
The Adventures of Rocky & Bullwinkle (2000)
as Boris
The Grand (2007)
as Dr. Yakov Achmed
The Mosquito Coast (1986)
as Hardware Clerk
Dunston Checks In (1996)
as Robert Grant
The Gettysburg Address (2025)
as Noah Brooks (voice)
Jimmy (2026)
as Louis B. Mayer
There's Something About Romcoms (2016)
as Self
Ira & Abby (2006)
as Dr. Morris Saperstein
A Fairly Odd Movie: Grow Up, Timmy Turner! (2011)
as Cosmo
Blankman (1994)
as Mr. Stone
Tom and Jerry: Back to Oz (2016)
as Mr. Bibb / The Nome King (voice)
Cinderella (1997)
as Lionel
The Aristocrats (2005)
as Self
The Last Supper (1995)
as Anti-Enviroment
National Lampoon's Another Dirty Movie (2012)
as Self (uncredited)
Rock Slyde (2010)
as Mailman Stan
Farce of the Penguins (2006)
as Penguin on Belly (voz)
Jingle Bells (1999)
as Elf (Voice)
Leo 2 (—)
Actor
Misery Loves Comedy (2015)
as Self
The Last Laugh (2016)
as Self (archive footage) (uncredited)
Broadway: The Next Generation (—)
as Self
Stars in Shorts (2012)
as Sid Rosenthal
Lucky Stiff (2014)
as Vinnie Di Ruzzio
Snoop Dogg's Hood of Horror (2006)
as British Record Mogul
A Christmas Carol (2004)
as Jacob Marley / Marley's Ghost
For the Love of Spock (2016)
as Self
Brighton Beach Memoirs (1986)
as Pool Player #1
The Trumpet of the Swan (2001)
as Father (voice)
Bye Bye Birdie (1995)
as Albert J. Peterson
Larry Gaye: Renegade Male Flight Attendant (2015)
as Larry's Dad
Love! Valour! Compassion! (1997)
as Buzz Hauser
Faith Based (2020)
as Nicky Steele
Not Your Time (2010)
as Sid Rosenthal
Denial (1998)
as Art Witz
Quantum Quest: A Cassini Space Odyssey (2010)
as Moronic (voice)
Earth to America (2005)
as self
Madeline: Lost in Paris (1999)
as Uncle Horst / Henri (voice)
Senior Trip (1981)
as Pete
Kramer vs. Kramer: Kenny to Cosmo (2004)
as Self
For Better or Worse (1995)
as Michael Makeshift
Dick Van Dyke: 98 Years of Magic (2023)
as Self - Performer
How Murray Saved Christmas (2014)
as Doc Holiday (voice)
Comedy Central Roast of William Shatner (2006)
as Self - Roastmaster
China, Il The Musical (2015)
as Harold
My Boyfriend's Meds (2020)
as Dr. Sternbach
The Man Who Saved Christmas (2002)
as A.C. Gilbert
Out of Office (2022)
Actor
On Edge (2001)
as Zamboni Phil
Say It Ain't Solo (2012)
as Self
The Very Best of America's Funniest Comedians (2003)
as Self (archive footage)
Larry David: Curb Your Enthusiasm (1999)
as Self
The Voyages of Young Doctor Dolittle (2011)
as Eugene (voice)
I Don't Buy Kisses Anymore (1992)
as Bernie Fishbine
The N.Y. Friars Club Roast of Jerry Stiller (1999)
as Self - Roastmaster
Broadway: Beyond the Golden Age (2021)
as Self
Seinfeld: How It Began (2004)
as Self/George Costanza
Titey (1998)
as Titey (voice)
Best Worst Thing That Ever Could Have Happened... (2016)
as Self
A Tribute to Stephen Sondheim (1995)
Actor
Down on the Waterfront (1994)
Actor
Paddy Chayefsky: Collector of Words (2025)
as Self
How to Go Out on a Date in Queens (2006)
as Johnny
The Portuguese Kid (2018)
as Barry Dragonetti
Killing Me Softly with His Songs (2022)
as Self
The Rocky Horror Musical Live Stream (2020)
as Narrator
The Truth Is in the Stars (2017)
as Self
The Conspiracy (2022)
Actor
Love and Action in Chicago (1999)
as Frank Bonner
Being 'Shallow Hal' (2001)
as Self
For Goodness Sake (1993)
as Electronics Store Customer
Stealing Pulp Fiction (2025)
as Dr. Mendelbaum
The Seinfeld Story (2004)
as Self
Cinderella: The Reunion, A Special Edition of 20/20 (2022)
as Self
Sexual Healing (1993)
as Frank
Rockabye (1986)
as Lt. Ernest Foy
Bucky and the Squirrels (2018)
as Jason Alexander
Bravo Profiles: Penn and Teller (2001)
as Self
The Sisters Rosensweig (—)
as Mervyn
Dora the Explorer: Dora's Enchanted Forest Adventures (2011)
as Owl (voice)
Sideshow: Alive on the Inside (1999)
as Narrator
The Mark Lembeck Technique (2016)
as Mark Lembeck
The Making of Disney's The Hunchback of Notre Dame (1996)
Actor
Ultimate Trek: Star Trek's Greatest Moments (1999)
as Host
Dunston Checks Out (2022)
as Jason Alexander (archival footage)
Jerry Seinfeld: Submarine Captain (2007)
as Self
Let's Rap Fire Safety (2000)
Actor