About
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
The SimpsonsSeries • 1989
Criminal MindsSeries • 2005
American Dad!Series • 2005
FriendsSeries • 1994
Two and a Half MenSeries • 2003
Young SheldonSeries • 2017
MonkSeries • 2002
SeinfeldSeries • 1989
Star Trek: VoyagerSeries • 1995
Curb Your EnthusiasmSeries • 2000
Malcolm in the MiddleSeries • 2000
CommunitySeries • 2009
Robot ChickenSeries • 2005
The NannySeries • 1993
The Tom and Jerry ShowSeries • 2014
The OrvilleSeries • 2017
Harley QuinnSeries • 2019
NewhartSeries • 1982
Rock, Paper, ScissorsSeries • 2024
The Marvelous Mrs. MaiselSeries • 2017
The ConnersSeries • 2018
DinosaursSeries • 1991
Mike & MollySeries • 2010
HerculesSeries • 1998