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.
Filmography 212
Movies (104)
Jimmy2026Louis B. Mayer
The Gettysburg Address2025Noah Brooks (voice)
Paddy Chayefsky: Collector of Words2025Self
Stealing Pulp Fiction2025Dr. Mendelbaum
The Electric State2025Ted / Wingman
Dick Van Dyke: 98 Years of Magic2023Self - Performer
Leo2023Jayda's Dad (voice)
The Conspiracy2022
Killing Me Softly with His Songs2022Self
Out of Office2022
Cinderella: The Reunion, A Special Edition of 20/202022Self
Dunston Checks Out2022Jason Alexander (archival footage)
Broadway: Beyond the Golden Age2021Self
The Rocky Horror Musical Live Stream2020Narrator
Faith Based2020Nicky Steele
My Boyfriend's Meds2020Dr. Sternbach
The Portuguese Kid2018Barry Dragonetti
Bucky and the Squirrels2018Jason Alexander
The Truth Is in the Stars2017Self
The Mark Lembeck Technique2016Mark Lembeck
Best Worst Thing That Ever Could Have Happened...2016Self
For the Love of Spock2016Self
There's Something About Romcoms2016Self
Tom and Jerry: Back to Oz2016Mr. Bibb / The Nome King (voice)
The Last Laugh2016Self (archive footage) (uncredited)
China, Il The Musical2015Harold
Larry Gaye: Renegade Male Flight Attendant2015Larry's Dad
Misery Loves Comedy2015Self
Wild Card2015Pinky
How Murray Saved Christmas2014Doc Holiday (voice)
Shows (108)
Mating Season2026Alan (voice)
LEGO Marvel Avengers: Strange Tails2025Magneto (voice)
The Bad Guys: The Series2025Mysterious Figure (voice)
Y llegaron de noche2024Carl Laemmle
Rock, Paper, Scissors2024Jonathan Fartjoke (voice)
History of the World: Part II2023Maurice Cheeks
Star Trek: Prodigy2021Doctor Noum (voice)
The Problem with Jon Stewart2021Jeff Bezos
History of the Sitcom2021Self - Actor
Celebrity Wheel of Fortune2021Self - Contestant
Stars in the House2020Self
Harley Quinn2019Sy Borgman (voice)
The Movies That Made Us2019Self
Mad About You2019Jason Alexander
The Conners2018Pastor Phil
Hit the Road2017Ken Swallow
Young Sheldon2017Gene Lundy
The Orville2017Olix
Kody Kapow2017Goji (voice)
The Marvelous Mrs. Maisel2017Asher Friedman
Dinner with Dad2017Jason Alexander
The $100,000 Pyramid2016Self
Match Game2016Self - Panelist
To Tell the Truth2016Self - Panelist
The Grinder2015Cliff Bemis
The Late Show with Stephen Colbert2015Self - Guest
Big Time in Hollywood, Fl2015Jason Alexander
The Late Late Show with James Corden2015Self
Penn Zero: Part-Time Hero2014Coach Wallace (voice)
The Tom and Jerry Show2014Rick (voice)