Jason Alexander
Born in Newark, New Jersey, USA — Sep 23 1959
Connect
Biography
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 Pro…
Photos
Jason Alexander's Credits
Browse acting and crew credits across movies and TV — filter and sort to find specific roles.
The Simpsons
Bourbon Verlander (voice)
Criminal Minds
Prof. Rothchild
Jeopardy!
Self
American Dad!
Mr. Orlando (voice)
Friends
Earl
Seinfeld
George Costanza
Two and a Half Men
Dr. Goodman
Community
Mountain Man
Star Trek: Voyager
Kurros
Monk
Marty Eels
Young Sheldon
Gene Lundy
Curb Your Enthusiasm
Jason Alexander
Malcolm in the Middle
Leonard
The Nanny
Jack
Robot Chicken
Krampus (voice)
Hollywood Squares
Self - Panelist
Newhart
The Tom and Jerry Show
Rick (voice)
Everybody Hates Chris
Principal Edwards
The Orville
Olix
Duckman
Duckman (voice)
Hercules
Poseidon
Dinosaurs
Grown Baby (voice)
Mike & Molly
Directing
The Conners
Pastor Phil
Harley Quinn
Sy Borgman (voice)
People's Choice Awards
Self - Host
Fish Hooks
Mr. Nibbles
The Marvelous Mrs. Maisel
Asher Friedman
Franklin & Bash
Carter Lang
Harry's Law
Richard Cross
Stars in the House
Self
The Cleveland Show
The Larry Sanders Show
Jason Alexander
Aladdin
Abis Mal (voice)
To Tell the Truth
Self - Panelist
The Twilight Zone
Patient
Match Game
Self - Panelist
Celebrity Wheel of Fortune
Self - Contestant
Remember WENN
Alan Ballinger
Rock, Paper, Scissors
Jonathan Fartjoke (voice)
Star Trek: Prodigy
Doctor Noum (voice)
Dream On
Randall Townsend
The New Adventures of Old Christine
Dr. Palmer
Reading Rainbow
Self - Narrator (voice)
Hollywood Game Night
Self
Son of the Beach
Disney's House of Mouse
The Legend of Tarzan
Zutho (voice)
The Movies That Made Us
Self
Dilbert
Catbert (voice)
The Grinder
Cliff Bemis
Penn Zero: Part-Time Hero
Coach Wallace (voice)
TripTank
Doctor (voice)
Wild Card
Pinky
History of the World: Part II
Maurice Cheeks
Hachi: A Dog's Tale
Carl
The Electric State
Ted / Wingman
Pretty Woman
Philip Stuckey
Muppets Tonight
Self
The Bad Guys: The Series
Mysterious Figure (voice)
Leo
Jayda's Dad (voice)
The Marriage Ref
Self - Panelist
Listen Up!
Tony Kleinman
Shallow Hal
Mauricio Wilson
The Huntress
The Hunchback of Notre Dame
Gargoyle Hugo (voice)
Kirstie
Stanford Temple
China, IL
Harold (voice)
A Capitol Fourth
Self
Campus Ladies
Directing
Critics Choice Awards
Self
Mad About You
Jason Alexander
The Emmy Awards
Self
Coneheads
Larry Farber
Bob Patterson
Bob Patterson
Jacob's Ladder
Geary
LEGO Marvel Avengers: Strange Tails
Magneto (voice)
Big Time in Hollywood, Fl
Jason Alexander
Saturday TV Funhouse
Titey (voice)
Agent Cody Banks
Production
Favorite Son
Chris Van Allen
The Return of Jafar
Abis Mal - the Chief of the Thieves (voice)
North
North's Dad
Hit the Road
Ken Swallow
101 Dalmatians II: Patch's London Adventure
Lightning (voice)
Meteor
Dr. Chetwyn
The Hunchback of Notre Dame II
Gargoyle Hugo (voice)
White Palace
Neil
Everything's Relative
Julian Beeby
The Paper
Marion Sandusky
The Aristocrats
Self
Thank God You're Here
Self
The Grand
Dr. Yakov Achmed
Where My Dogs At?
History of the Sitcom
Self - Actor
The Gettysburg Address
Noah Brooks (voice)
Kody Kapow
Goji (voice)
There's Something About Romcoms
Self
Dunston Checks In
Robert Grant
The Adventures of Rocky & Bullwinkle
Boris
Agent Cody Banks 2: Destination London
Production
Misery Loves Comedy
Self
Broadway: Beyond the Golden Age
Self
Rockabye
Lt. Ernest Foy
Dinner with Dad
Jason Alexander
Blankman
Mr. Stone
The Last Laugh
Self
Ira & Abby
Dr. Morris Saperstein
Dick Van Dyke: 98 Years of Magic
Self - Performer
The Mosquito Coast
Hardware Clerk
The Last Supper
Anti-Enviroment
Y llegaron de noche
Carl Laemmle
Denial
Art Witz
Cinderella
Lionel
The Burning
Dave
A Christmas Carol
Jacob Marley / Marley's Ghost
Farce of the Penguins
Penguin on Belly (voz)
For the Love of Spock
Self
Stars in Shorts
Sid Rosenthal
Broadway: The Next Generation
Self
Just Looking
Directing
National Lampoon's Another Dirty Movie
Self (uncredited)
Larry Gaye: Renegade Male Flight Attendant
Larry's Dad
Quantum Quest: A Cassini Space Odyssey
Moronic (voice)
Jimmy
Louis B. Mayer
Snoop Dogg's Hood of Horror
British Record Mogul
Leo 2
Comedy Central Roast of William Shatner
Self - Roastmaster
Not Your Time
Sid Rosenthal
A Fairly Odd Movie: Grow Up, Timmy Turner!
Cosmo
Love! Valour! Compassion!
Buzz Hauser
Madeline: Lost in Paris
Uncle Horst / Henri (voice)
Earth to America
self
Tom and Jerry: Back to Oz
Mr. Bibb / The Nome King (voice)
Step It Up and Dance
Brighton Beach Memoirs
Pool Player #1
Titey
Titey (voice)
Larry David: Curb Your Enthusiasm
Self
Faith Based
Nicky Steele
For Better or Worse
Michael Makeshift
Senior Trip
Pete
How Murray Saved Christmas
Doc Holiday (voice)
Love and Action in Chicago
Frank Bonner
Lucky Stiff
Vinnie Di Ruzzio
The Truth Is in the Stars
Self
The Trumpet of the Swan
Father (voice)
The Very Best of America's Funniest Comedians
Self (archive footage)
The Rocky Horror Musical Live Stream
Narrator
Killing Me Softly with His Songs
Self
On Edge
Zamboni Phil
Down on the Waterfront
Kramer vs. Kramer: Kenny to Cosmo
Self
The Voyages of Young Doctor Dolittle
Eugene (voice)
Stealing Pulp Fiction
Dr. Mendelbaum
Seinfeld: How It Began
Self/George Costanza
Bye Bye Birdie
Albert J. Peterson
Best Worst Thing That Ever Could Have Happened...
Self
The N.Y. Friars Club Roast of Jerry Stiller
Self - Roastmaster
My Boyfriend's Meds
Dr. Sternbach
I Don't Buy Kisses Anymore
Bernie Fishbine
Out of Office
Jingle Bells
Elf (Voice)
How to Go Out on a Date in Queens
Johnny
Cinderella: The Reunion, A Special Edition of 20/20
Self
Being 'Shallow Hal'
Self
The Seinfeld Story
Self
Bucky and the Squirrels
Jason Alexander
The Portuguese Kid
Barry Dragonetti
The Conspiracy
A Tribute to Stephen Sondheim
The Sisters Rosensweig
Mervyn
Rock Slyde
Mailman Stan
Say It Ain't Solo
Self
Paddy Chayefsky: Collector of Words
Self
The Man Who Saved Christmas
A.C. Gilbert
China, Il The Musical
Harold
Jerry Seinfeld: Submarine Captain
Self
Let's Rap Fire Safety
Sexual Healing
Frank
The Mark Lembeck Technique
Mark Lembeck
Bravo Profiles: Penn and Teller
Self
Sideshow: Alive on the Inside
Narrator
Dunston Checks Out
Jason Alexander (archival footage)
For Goodness Sake
Electronics Store Customer
Dora the Explorer: Dora's Enchanted Forest Adventures
Owl (voice)
Ultimate Trek: Star Trek's Greatest Moments
Host
Tony Awards
Self - Presenter