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.
Philip Stuckey
Pretty Woman
Jayda's Dad (voice)
Leo
Gargoyle Hugo (voice)
The Hunchback of Notre Dame
Geary
Jacob's Ladder
Anti-Enviroment
The Last Supper
Pool Player #1
Brighton Beach Memoirs
Mr. Stone
Blankman
Hardware Clerk
The Mosquito Coast
Dave
The Burning
North's Dad
North
Moronic (voice)
Quantum Quest: A Cassini Space Odyssey
Marion Sandusky
The Paper
Gargoyle Hugo (voice)
The Hunchback of Notre Dame II
Penguin on Belly (voice)
Farce of the Penguins
Larry Farber
Coneheads
Mauricio
Shallow Hal
Carl
Hachi: A Dog's Tale
Lightning (voice)
101 Dalmatians II: Patch's London Adventure
Neil
White Palace
Jacob Marley / Marley's Ghost
A Christmas Carol
Albert J. Peterson
Bye Bye Birdie
Lionel
Cinderella
Self
The Aristocrats
British Record Mogul
Snoop Dogg's Hood of Horror
Mailman Stan
Rock Slyde
A.C. Gilbert
The Man Who Saved Christmas
Art Witz
Denial
Electronics Store Customer
For Goodness Sake
Buzz Hauser
Love! Valour! Compassion!
Robert Grant
Dunston Checks In
Titey (voice)
Titey
Boris
The Adventures of Rocky & Bullwinkle
Self
There's Something About Romcoms
Cosmo
A Fairly Odd Movie: Grow Up, Timmy Turner!
Bernie Fishbine
I Don't Buy Kisses Anymore
Father (voice)
The Trumpet of the Swan
Johnny
How to Go Out on a Date in Queens
Michael Makeshift
For Better or Worse
Sid Rosenthal
Stars In Shorts
Eugene (voice)
The Voyages of Young Doctor Dolittle
Himself
Jerry Seinfeld: Submarine Captain
Self
The Last Laugh
Lt. Ernest Foy
Rockabye
Uncle Horst / Henri (voice)
Madeline: Lost in Paris
Down on the Waterfront
Pinky
Wild Card
Ted / Wingman
The Electric State
Self
Cinderella: The Reunion, A Special Edition of 20/20
Out of Office
Abis Mal - the Chief of the Thieves (voice)
The Return of Jafar
Vinnie Di Ruzzio
Lucky Stiff
Self - Performer
Dick Van Dyke: 98 Years of Magic
Elf (Voice)
Jingle Bells
Self
Misery Loves Comedy
self
Earth to America
Self (uncredited)
National Lampoon's Another Dirty Movie
Sid Rosenthal
Not Your Time
Narrator
Sideshow: Alive on the Inside
Self - Roastmaster
Comedy Central Roast of William Shatner
Self
Killing Me Softly with His Songs
Dr. Morris Saperstein
Ira & Abby
Self/George Costanza
Seinfeld: How It Began
The Conspiracy
Larry's Dad
Larry Gaye: Renegade Male Flight Attendant
Self
Broadway: The Next Generation
Quote Reader
Sex, Censorship and the Silver Screen
Dr. Yakov Achmed
The Grand
Frank
Sexual Healing
Doc Holiday (voice)
How Murray Saved Christmas
Owl (voice)
Dora the Explorer: Dora's Enchanted Forest Adventures
Self (archive footage)
The Very Best of America's Funniest Comedians
Himself
Say It Ain't Solo
Dr. Mendelbaum
Stealing Pulp Fiction
Dr. Chetwyn
Meteor
Host
Ultimate Trek: Star Trek's Greatest Moments
Self
For the Love of Spock
Let's Rap Fire Safety
Self
Best Worst Thing That Ever Could Have Happened...
Self
The Truth Is in the Stars
Jason Alexander
Bucky and the Squirrels
Self
Larry David: Curb Your Enthusiasm
Self - Roastmaster
The N.Y. Friars Club Roast of Jerry Stiller
Dr. Sternbach
Las Pildoras de mi Novio
Frank Bonner
Love and Action in Chicago
Barry Dragonetti
The Portuguese Kid
Nicky Steele
Faith Based
Noah Brooks (voice)
The Gettysburg Address
Pete
Senior Trip
Self
Being 'Shallow Hal'
Mr. Bibb / The Nome King (voice)
Tom and Jerry: Back to Oz
Narrator
The Rocky Horror Musical Live Stream
Mervyn
The Sisters Rosensweig
Mark Lembeck
The Mark Lembeck Technique
Self
Broadway: Beyond the Golden Age
Leo 2
Self
The Seinfeld Story
A Tribute to Stephen Sondheim
Harold
China, Il The Musical
Self
Paddy Chayefsky: Collector of Words
Jason Alexander (archival footage)
Dunston Checks Out
Known For
Acting
Known Credits
100
Gender
Male
Birthday
1959-09-23
Place of Birth
Newark, New Jersey, USA
Also Known As
Jason Scott Greenspan