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.
Known For
Jimmy's Seen (1)
Filmography
Acting Credits (225)
Jimmy
Louis B. Mayer
2026
The Gettysburg Address
Noah Brooks (voice)
2025
LEGO Marvel Avengers: Strange Tails
Magneto (voice)
2025
The Bad Guys: The Series
Mysterious Figure (voice)
2025
The Bad Guys: The Series
D.B. Cougar (voice)
2025
Directing Credits (8)
Mike & Molly
Director
2010
Campus Ladies
Director
2006
Everybody Hates Chris
Director
2005
Criminal Minds
Director
2005
Just Looking
Director
1999
