Jason Alexander
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.
209 acting credits · 9 directing credits
Acting · 209
The Simpsons
1989
Criminal Minds
2005
American Dad!
2005
Friends
1994
Late Night with Seth Meyers
2014
Two and a Half Men
2003
Seinfeld
1989
Monk
2002
Young Sheldon
2017
Saturday Night Live
1975
Real Time with Bill Maher
2003
Star Trek: Voyager
1995
Malcolm in the Middle
2000
Curb Your Enthusiasm
2000
The Nanny
1993
Golden Globe Awards
1944
The Late Late Show with James Corden
2015
The Late Late Show with Craig Ferguson
2005
Community
2009
Jimmy Kimmel Live!
2003
Robot Chicken
2005
Mating Season
2026
The Orville
2017
Jeopardy!
1984
LIVE with Kelly and Mark
1988
Aladdin
1994
Dinosaurs
1991
The Tom and Jerry Show
2014
Tony Awards
1956
Hollywood Squares
1998
The Ellen DeGeneres Show
2003
Everybody Hates Chris
2005
Late Night with David Letterman
1982
Newhart
1982
Harley Quinn
2019
Hercules
1998
Harry's Law
2011
Duckman
1994
Franklin & Bash
2011
Stars in the House
2020
The Cleveland Show
2009
Drunk History
2013
The Marvelous Mrs. Maisel
2017
The Larry Sanders Show
1992
The Tony Danza Show
2004
People's Choice Awards
1975
Fish Hooks
2010
The Conners
2018
The Twilight Zone
2002
Good Day Live
2001
The New Adventures of Old Christine
2006
Comedy Bang! Bang!
2012
Reading Rainbow
1983
Rock, Paper, Scissors
2024
Star Trek: Prodigy
2021
The Bad Guys: The Series
2025
To Tell the Truth
2016
Penn Zero: Part-Time Hero
2014
Comedians in Cars Getting Coffee
2012
Match Game
2016
The Legend of Tarzan
2001
Dream On
1990
Talking Dead
2011
Disney's House of Mouse
2001
History of the World: Part II
2023
Celebrity Wheel of Fortune
2021
The $100,000 Pyramid
2016
The Movies That Made Us
2019
Pretty Woman
1990
Son of the Beach
2000
Shallow Hal
2001
The Hunchback of Notre Dame
1996
Hollywood Game Night
2013
Remember WENN
1996
Hachi: A Dog's Tale
2009
The Grinder
2015
The Electric State
2025
The Late Late Show with Craig Kilborn
1999
Dilbert
1999
The Huntress
2000
Wild Card
2015
Muppets Tonight
1996
Leo
2023
Rachael Ray
2006
Primetime Glick
2001
E/R
1984
TripTank
2014
China, IL
2011
Jacob's Ladder
1990
Shatner's Raw Nerve
2008
The Marriage Ref
2010
Listen Up!
2004
The Problem with Jon Stewart
2021
A Capitol Fourth
1980
The Emmy Awards
1949
Mad About You
2019
Talkshow with Spike Feresten
2006
Kirstie
2013
The Return of Jafar
1994
Critics Choice Awards
2001
101 Dalmatians II: Patch's London Adventure
2003
Meteor
2009
Coneheads
1993
White Palace
1990
Bob Patterson
2001
The Hunchback of Notre Dame II
2002
The Paper
1994
Big Time in Hollywood, Fl
2015
Thank God You're Here
2007
Favorite Son
1988
North
1994
Jimmy
2026
The Burning
1981
The Adventures of Rocky & Bullwinkle
2000
Saturday TV Funhouse
—
Everything's Relative
1987
The Mosquito Coast
1986
LEGO Marvel Avengers: Strange Tails
2025
Dunston Checks In
1996
There's Something About Romcoms
2016
The Last Supper
1995
Blankman
1994
Cinderella
1997
The Grand
2007
Y llegaron de noche
2024
Misery Loves Comedy
2015
Where My Dogs At?
2006
History of the Sitcom
2021
Earth to America
2005
Kody Kapow
2017
Tom and Jerry: Back to Oz
2016
The Aristocrats
2005
The Gettysburg Address
2025
Ira & Abby
2006
A Fairly Odd Movie: Grow Up, Timmy Turner!
2011
Hit the Road
2017
Dinner with Dad
2017
Farce of the Penguins
2006
Quantum Quest: A Cassini Space Odyssey
2010
Dick Van Dyke: 98 Years of Magic
2023
For the Love of Spock
2016
The Last Laugh
2016
The Trumpet of the Swan
2001
Larry Gaye: Renegade Male Flight Attendant
2015
National Lampoon's Another Dirty Movie
2012
Denial
1998
Brighton Beach Memoirs
1986
Comedy Central Roast of William Shatner
2006
Stars in Shorts
2012
Broadway: Beyond the Golden Age
2021
Step It Up and Dance
2008
Snoop Dogg's Hood of Horror
2006
Titey
1998
Madeline: Lost in Paris
1999
My Boyfriend's Meds
2020
Larry David: Curb Your Enthusiasm
1999
A Christmas Carol
2004
Rock Slyde
2010
The N.Y. Friars Club Roast of Jerry Stiller
1999
Being 'Shallow Hal'
2001
Cinderella: The Reunion, A Special Edition of 20/20
2022
Rockabye
1986
Broadway: The Next Generation
—
Senior Trip
1981
Not Your Time
2010
Bucky and the Squirrels
2018
Lucky Stiff
2014
Faith Based
2020
The Voyages of Young Doctor Dolittle
2011
How to Go Out on a Date in Queens
2006
Bye Bye Birdie
1995
Jingle Bells
1999
The Very Best of America's Funniest Comedians
2003
For Better or Worse
1995
For Goodness Sake
1993
Leo 2
—
A Tribute to Stephen Sondheim
1995
How Murray Saved Christmas
2014
The Portuguese Kid
2018
Out of Office
2022
The Conspiracy
2022
The Sisters Rosensweig
—
Best Worst Thing That Ever Could Have Happened...
2016
Paddy Chayefsky: Collector of Words
2025
The Truth Is in the Stars
2017
On Edge
2001
The Rocky Horror Musical Live Stream
2020
Love! Valour! Compassion!
1997
Down on the Waterfront
1994
The Man Who Saved Christmas
2002
I Don't Buy Kisses Anymore
1992
Jerry Seinfeld: Submarine Captain
2007
Seinfeld: How It Began
2004
Stealing Pulp Fiction
2025
Say It Ain't Solo
2012
Sexual Healing
1993
The Seinfeld Story
2004
Love and Action in Chicago
1999
Kramer vs. Kramer: Kenny to Cosmo
2004
China, Il The Musical
2015
Sideshow: Alive on the Inside
1999
Killing Me Softly with His Songs
2022
Dora the Explorer: Dora's Enchanted Forest Adventures
2011
The Mark Lembeck Technique
2016
The Making of Disney's The Hunchback of Notre Dame
1996
Let's Rap Fire Safety
2000
Dunston Checks Out
2022
Ultimate Trek: Star Trek's Greatest Moments
1999
Bravo Profiles: Penn and Teller
2001
