Jason Alexander
Acting
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 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.
As actor 212
The Simpsons
1989
Criminal Minds
2005
The Late Show with Stephen Colbert
2015
American Dad!
2005
Late Night with Seth Meyers
2014
Friends
1994
Hollywood Squares
1998
Jeopardy!
1984
Real Time with Bill Maher
2003
Young Sheldon
2017
Saturday Night Live
1975
The Late Late Show with James Corden
2015
Two and a Half Men
2003
The Late Late Show with Craig Ferguson
2005
Star Trek: Voyager
1995
Monk
2002
The Nanny
1993
Jimmy Kimmel Live!
2003
Seinfeld
1989
LIVE with Kelly and Mark
1988
Robot Chicken
2005
The Orville
2017
Tony Awards
1956
The Tom and Jerry Show
2014
Curb Your Enthusiasm
2000
Late Night with David Letterman
1982
Community
2009
Malcolm in the Middle
2000
Good Day Live
2001
Newhart
1982
The Larry Sanders Show
1992
Golden Globe Awards
1944
Aladdin
1994
Harley Quinn
2019
The Ellen DeGeneres Show
2003
Rock, Paper, Scissors
2024
The Cleveland Show
2009
The Bad Guys: The Series
2025
Dinosaurs
1991
Everybody Hates Chris
2005
The Marvelous Mrs. Maisel
2017
Dilbert
1999
Fish Hooks
2010
People's Choice Awards
1975
Duckman
1994
The Tony Danza Show
2004
Hercules
1998
Franklin & Bash
2011
Drunk History
2013
The Conners
2018
Comedy Bang! Bang!
2012
The Legend of Tarzan
2001
Talking Dead
2011
Pretty Woman
1990
The Twilight Zone
2002
To Tell the Truth
2016
Celebrity Wheel of Fortune
2021
Mating Season
2026
The New Adventures of Old Christine
2006
Wild Card
2015
Star Trek: Prodigy
2021
Penn Zero: Part-Time Hero
2014
Stars in the House
2020
Dream On
1990
The $100,000 Pyramid
2016
Disney's House of Mouse
2001
Match Game
2016
Reading Rainbow
1983
Hachi: A Dog's Tale
2009
Harry's Law
2011
The Hunchback of Notre Dame
1996
Comedians in Cars Getting Coffee
2012
Rachael Ray
2006
Muppets Tonight
1996
History of the World: Part II
2023
Hollywood Game Night
2013
The Electric State
2025
China, IL
2011
LEGO Marvel Avengers: Strange Tails
2025
Shallow Hal
2001
The Late Late Show with Craig Kilborn
1999
Remember WENN
1996
Son of the Beach
2000
The Grinder
2015
The Movies That Made Us
2019
Who Wants to Be a Millionaire
2020
Jacob's Ladder
1990
Leo
2023
TripTank
2014
Primetime Glick
2001
The Huntress
2000
The Hunchback of Notre Dame II
2002
The Return of Jafar
1994
Talkshow with Spike Feresten
2006
The Problem with Jon Stewart
2021
The Marriage Ref
2010
Coneheads
1993
Meteor
2009
101 Dalmatians II: Patch's London Adventure
2003
Shatner's Raw Nerve
2008
Critics Choice Awards
2001
Kirstie
2013
Listen Up!
2004
The Paper
1994
E/R
1984
Mad About You
2019
The Gettysburg Address
2025
White Palace
1990
The Mosquito Coast
1986
A Capitol Fourth
1980
The Adventures of Rocky & Bullwinkle
2000
The Burning
1981
Kody Kapow
2017
The Emmy Awards
1949
Dunston Checks In
1996
Bob Patterson
2001
The Last Supper
1995
Blankman
1994
The Aristocrats
2005
Big Time in Hollywood, Fl
2015
Cinderella
1997
The Grand
2007
A Fairly Odd Movie: Grow Up, Timmy Turner!
2011
North
1994
Tom and Jerry: Back to Oz
2016
History of the Sitcom
2021
The Last Laugh
2016
Thank God You're Here
2007
Favorite Son
1988
Jimmy
2026
Larry Gaye: Renegade Male Flight Attendant
2015
Everything's Relative
1987
The Trumpet of the Swan
2001
Misery Loves Comedy
2015
Faith Based
2020
Broadway: Beyond the Golden Age
2021
To Kill a Nazi
2026
Snoop Dogg's Hood of Horror
2006
Hit the Road
2017
Where My Dogs At?
2006
For the Love of Spock
2016
Ira & Abby
2006
Dinner with Dad
2017
Bye Bye Birdie
1995
A Christmas Carol
2004
Farce of the Penguins
2006
Lucky Stiff
2014
Step It Up and Dance
2008
Larry David: Curb Your Enthusiasm
1999
Y llegaron de noche
2024
There's Something About Romcoms
2016
National Lampoon's Another Dirty Movie
2012
Brighton Beach Memoirs
1986
Stars in Shorts
2012
Leo 2
My Boyfriend's Meds
2020
Cinderella: The Reunion, A Special Edition of 20/20
2022
Dick Van Dyke: 98 Years of Magic
2023
Not Your Time
2010
Saturday TV Funhouse
Quantum Quest: A Cassini Space Odyssey
2010
Killing Me Softly with His Songs
2022
Denial
1998
Kramer vs. Kramer: Kenny to Cosmo
2004
Comedy Central Roast of William Shatner
2006
Senior Trip
1981
Out of Office
2022
Broadway: The Next Generation
For Better or Worse
1995
On Edge
2001
Earth to America
2005
The Truth Is in the Stars
2017
The Very Best of America's Funniest Comedians
2003
How Murray Saved Christmas
2014
Love! Valour! Compassion!
1997
Madeline: Lost in Paris
1999
The N.Y. Friars Club Roast of Jerry Stiller
1999
The Conspiracy
2022
Paddy Chayefsky: Collector of Words
2025
The Rocky Horror Musical Live Stream
2020
Jingle Bells
1999
The Man Who Saved Christmas
2002
Best Worst Thing That Ever Could Have Happened...
2016
The Sisters Rosensweig
Seinfeld: How It Began
2004
Sideshow: Alive on the Inside
1999
Titey
1998
A Tribute to Stephen Sondheim
1995
For Goodness Sake
1993
China, Il The Musical
2015
Being 'Shallow Hal'
2001
Say It Ain't Solo
2012
The Seinfeld Story
2004
Love and Action in Chicago
1999
The Portuguese Kid
2018
I Don't Buy Kisses Anymore
1992
Down on the Waterfront
1994
Rock Slyde
2010
Let's Rap Fire Safety
2000
Sexual Healing
1993
How to Go Out on a Date in Queens
2006
Stealing Pulp Fiction
2025
The Voyages of Young Doctor Dolittle
2011
Rockabye
1986
Bravo Profiles: Penn and Teller
2001
Jerry Seinfeld: Submarine Captain
2007
Bucky and the Squirrels
2018
The Mark Lembeck Technique
2016
Ultimate Trek: Star Trek's Greatest Moments
1999
Dunston Checks Out
2022
Dora the Explorer: Dora's Enchanted Forest Adventures
2011
The Making of Disney's The Hunchback of Notre Dame
1996
On the crew 14
Criminal Minds
2005
Young Sheldon
2017
Seinfeld
1989
Mike & Molly
2010
Everybody Hates Chris
2005
Remember WENN
1996
Agent Cody Banks
2003
Campus Ladies
2006
Agent Cody Banks 2: Destination London
2004
Bob Patterson
2001
Just Looking
1999
Dinner with Dad
2017
For Better or Worse
1995
The Mark Lembeck Technique
2016