
Acting · 66 years old
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 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.

For Goodness Sake
Electronics Store Customer

Dora the Explorer: Dora's Enchanted Forest Adventures
Owl (voice)

Saturday TV Funhouse
Titey (voice)

People's Choice Awards
Self - Host

Malcolm in the Middle
Leonard

Friends
Earl

Reading Rainbow
Self - Narrator (voice)

Harley Quinn
Sy Borgman (voice)

Criminal Minds
Prof. Rothchild

Seinfeld
George Costanza

Everybody Hates Chris
Principal Edwards

The Nanny
Jack

The Marvelous Mrs. Maisel
Asher Friedman

Curb Your Enthusiasm
Jason Alexander

Young Sheldon
Gene Lundy

The Simpsons
Bourbon Verlander (voice)

Hachi: A Dog's Tale
Carl

Community
Mountain Man

Rockabye
Lt. Ernest Foy

Cinderella: The Reunion, A Special Edition of 20/20
Self