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.
Known For
Movies
- Pretty Woman
1990
- Leo
2023
- The Hunchback of Notre ...
1996
- Jacob's Ladder
1990
- The Last Supper
1995
- Brighton Beach Memoirs
1986
- Blankman
1994
- The Mosquito Coast
1986
- The Burning
1981
- North
1994
- Quantum Quest: A Cassin...
2010
- The Paper
1994
- The Hunchback of Notre ...
2002
- Farce of the Penguins
2006
- Coneheads
1993
- Shallow Hal
2001
- Hachi: A Dog's Tale
2009
- 101 Dalmatians II: Patc...
2003
- White Palace
1990
- A Christmas Carol
2004
- Bye Bye Birdie
1995
- Cinderella
1997
- The Aristocrats
2005
- Snoop Dogg's Hood of Ho...
2006
- Rock Slyde
2010
- The Man Who Saved Chris...
2002
- Denial
1998
- For Goodness Sake
1993
- Love! Valour! Compassio...
1997
- Dunston Checks In
1996
- Titey
1998
- The Adventures of Rocky...
2000
- There's Something About...
2016
- A Fairly Odd Movie: Gro...
2011
- I Don't Buy Kisses Anym...
1992
- The Trumpet of the Swan
2001
- How to Go Out on a Date...
2006
- For Better or Worse
1995
- Stars In Shorts
2012
- The Voyages of Young Do...
2011
- Jerry Seinfeld: Submari...
2007
- The Last Laugh
2016
- Rockabye
1986
- Madeline: Lost in Paris
1999
- Down on the Waterfront
1994
- Wild Card
2015
- The Electric State
2025
- Cinderella: The Reunion...
2022
- Out of Office
2022
- The Return of Jafar
1994
- Lucky Stiff
2014
- Dick Van Dyke: 98 Years...
2023
- Jingle Bells
1999
- Misery Loves Comedy
2015
- Earth to America
2005
- National Lampoon's Anot...
2012
- Not Your Time
2010
- Sideshow: Alive on the ...
1999
- Comedy Central Roast of...
2006
- Killing Me Softly with ...
2022
- Ira & Abby
2006
- Seinfeld: How It Began
2004
- The Conspiracy
2022
- Larry Gaye: Renegade Ma...
2015
- Broadway: The Next Gene...
2017
- Sex, Censorship and the...
1996
- The Grand
2007
- Sexual Healing
1993
- How Murray Saved Christ...
2014
- Dora the Explorer: Dora...
2011
- The Very Best of Americ...
2003
- Say It Ain't Solo
2012
- Stealing Pulp Fiction
2024
- Meteor
2009
- Ultimate Trek: Star Tre...
1999
- For the Love of Spock
2016
- Let's Rap Fire Safety
2000
- Best Worst Thing That E...
2016
- The Truth Is in the Sta...
2017
- Bucky and the Squirrels
2018
- Larry David: Curb Your ...
1999
- The N.Y. Friars Club Ro...
1999
- Las Pildoras de mi Novio
2020
- Love and Action in Chic...
1999
- The Portuguese Kid
2018
- Faith Based
2020
- The Gettysburg Address
2025
- Senior Trip
1981
- Being 'Shallow Hal'
2001
- Tom and Jerry: Back to ...
2016
- The Rocky Horror Musica...
2020
- The Sisters Rosensweig
- The Mark Lembeck Techni...
2016
- Broadway: Beyond the Go...
2021
- Leo 2
- The Seinfeld Story
2004
- A Tribute to Stephen So...
1995
- China, Il The Musical
2015
TV Shows
- Talkshow with Spike Fer...
2006
- Duckman
1994
- Son of the Beach
2000
- Everybody Hates Chris
2005
- Seinfeld
1989
- The Ellen DeGeneres Show
2003
- The Tony Danza Show
2004
- Dream On
1990
- Jimmy Kimmel Live!
2003
- Friends
1994
- Star Trek: Voyager
1995
- Monk
2002
- The Larry Sanders Show
1992
- The Legend of Tarzan
2001
- Disney's House of Mouse
2001
- Dinosaurs
1991
- Aladdin
1994
- Hercules
1998
- E/R
1984
- Newhart
1982
- The New Adventures of O...
2006
- The Huntress
2000
- Late Night with David L...
1982
- Muppets Tonight
1996
- Bob Patterson
2001
- Listen Up!
2004
- E/R
1984
- The Late Late Show with...
2005
- Everything's Relative
1987
- Where My Dogs At?
2006
- Step It Up and Dance
2008
- The Cleveland Show
2009
- The Marriage Ref
2010
- The Late Late Show with...
1999
- Good Day Live
2001
- The Emmy Awards
1949
- Fish Hooks
2010
- Meteor
2009
- Saturday Night Live
1975
- Critics Choice Awards
2001
- Community
2009
- American Dad!
2005
- The Movies That Made Us
2019
- Comedy Bang! Bang!
2012
- Drunk History
2013
- The Grinder
2015
- Two and a Half Men
2003
- Favorite Son
1988
- Late Night with Seth Me...
2014
- Talking Dead
2011
- The Late Late Show with...
2015
- Aladdin
1994
- Aladdin
1994
- Big Time in Hollywood, ...
2015
- The Twilight Zone
2002
- The Tom and Jerry Show
2014
- Dinosaurs
1991
- Hollywood Squares
1998
- Penn Zero: Part-Time He...
2014
- Fish Hooks
2010
- Tony Awards
1956
- History of the Sitcom
2021
- Reading Rainbow
1983
- Hit the Road
2017
- Dinner with Dad
2017
- The Marvelous Mrs. Mais...
2017
- TripTank
2014
- Match Game
2016
- Shatner's Raw Nerve
2008
- The $100,000 Pyramid
2016
- Kody Kapow
2017
- Criminal Minds
2005
- Harley Quinn
2019
- The Orville
2017
- Dinosaurs
1991
- Dinosaurs
1991
- Dinosaurs
1991
- Dinosaurs
1991
- Dinosaurs
1991
- Comedians in Cars Getti...
2012
- Rachael Ray
2006
- The Conners
2018
- Star Trek: Prodigy
2021
- China, IL
2011
- Dilbert
1999
- Stars in the House
2020
- Stars in the House
2020
- Saturday Night Live
1975
- Young Sheldon
2017
- A Capitol Fourth
1980
- Robot Chicken
2005
- Curb Your Enthusiasm
2000
- The Simpsons
1989
- American Dad!
2005
- Real Time with Bill Mah...
2003
- Kirstie
2013
- Hollywood Game Night
2013
- Mad About You
2019
- Primetime Glick
2001
- History of the World: P...
2023
- LIVE with Kelly and Mark
1988
- Star Trek: Prodigy
2021
- Saturday TV Funhouse
- Rock, Paper, Scissors
2024
- Hercules
1998
- To Tell the Truth
2016
- Malcolm in the Middle
2000
- Thank God You're Here
2007
- Celebrity Wheel of Fort...
2021
- Y llegaron de noche
2024
- Hollywood Squares
1998
- Remember WENN
1996
- Harry's Law
2011