About
Jason Alexander, born Jay Scott Greenspan, is a celebrated American actor and comedian with a career marked by critical acclaim and diverse roles. He has received an Emmy Award and a Tony Award, along with multiple Golden Globe nominations. Alexander rose to fame for his portrayal of George Costanza in the iconic NBC sitcom *Seinfeld*. He is recognized for his versatile acting abilities, comedic timing, and contributions to both television and theater.
Career Timeline
Broadway Debut
Jason Alexander makes his Broadway debut in *Merrily We Roll Along*.
Tony Award Winner
Wins a Tony Award for *Jerome Robbins' Broadway*, boosting his profile.
*Seinfeld* Casting
Cast as George Costanza in *Seinfeld*, a breakthrough role.
*Seinfeld* Finale
*Seinfeld* ends its run, making Alexander a household name and wealthy.
Post-*Seinfeld* Roles
Takes on various TV and stage roles, maintaining his career.
Guest Appearances
Appears in numerous TV shows and films, staying relevant.
Established Career
Continues to work steadily in television and theater, maintaining a respected career.
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Last updated: February 25, 2026