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Jason Alexander

American actor, comedian, director and television host

AI overview

Jason Alexander is an American actor, comedian, director, and television host known for his work in entertainment across multiple roles. He is best known for playing George Costanza on the popular sitcom "Seinfeld," a role that made him a recognizable figure in American television comedy.

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Person · Open Library

Born: 1959-09-23
Works: 14

Top works

Killadelphia Vol. 6
Killadelphia #35
Remnants
Killadelphia #29
Killadelphia #28

via Open Library + Wikidata

Film & TV

Acting · Newark, New Jersey, USA

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…

Known for

Jimmy — Louis B. Mayer2026
Mating Season — Alan (voice)2026
The Electric State — Ted / Wingman2025
Stealing Pulp Fiction — Dr. Mendelbaum2025
The Gettysburg Address — Noah Brooks (voice)2025
Paddy Chayefsky: Collector of Words — Self2025
The Bad Guys: The Series — Mysterious Figure (voice)

Article

Jason Alexander (born Jay Scott Greenspan; September 23, 1959) is an American actor and comedian. Over the course of his career, he has received an Emmy Award and a Tony Award as well as nominations for four Golden Globe Awards. He gained stardom for his role as George Costanza in the NBC sitcom Seinfeld (1989–1998), for which he won a Screen Actors Guild Award for Outstanding Performance by a Male Actor in a Comedy Series and was nominated for seven consecutive Primetime Emmy Awards for Outstanding Supporting Actor in a Comedy Series and four Golden Globe Awards for Best Supporting Actor in Television.

Alexander made his Broadway debut originating the role of Joe in Stephen Sondheim's Merrily We Roll Along in 1981. He remained active on Broadway acting in the musicals The Rink in 1984 and the Neil Simon play Broadway Bound in 1986. He then starred in Jerome Robbins' Broadway in 1989, for which he won the Tony Award for Best Actor in a Musical. His subsequent theatre roles include the touring production of The Producers from 2003 to 2004 and replacing Larry David in the original 2015 Broadway production of Fish in the Dark. He has also directed several plays such as the original 2023 Broadway production of The Cottage.