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