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Personal Info
Known For
Acting
Birthday
September 23, 1959
Place of Birth
Newark, New Jersey, USA
Also Known As
- Jason Scott Greenspan
- جیسون الکساندر
Jason Alexander
2.1 Popularity
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
0.0
Louis B. Mayer
Jimmy
2026
0.0
Noah Brooks (voice)
The Gettysburg Address
2025
5.0
Magneto (voice)
LEGO Marvel Avengers: Strange Tails
2025
6.7
Mysterious Figure (voice)
The Bad Guys: Breaking In
2025
0.0
Self
Paddy Chayefsky: Collector of Words
2025
4.0
Dr. Mendelbaum
Stealing Pulp Fiction
2025
6.5
Ted / Wingman
The Electric State
2025
7.1
Carl Laemmle
Y llegaron de noche
2024
7.8
Self - Performer
Dick Van Dyke: 98 Years of Magic
2023
7.4
Jayda's Dad (voice)
Leo
2023
Credits
Jimmy
as Louis B. Mayer
2026
0.0
The Gettysburg Address
as Noah Brooks (voice)
2025
0.0
LEGO Marvel Avengers: Strange Tails
as Magneto (voice)
2025
5.0
The Bad Guys: Breaking In
as Mysterious Figure (voice)
2025
6.7
Paddy Chayefsky: Collector of Words
as Self
2025
0.0
Stealing Pulp Fiction
as Dr. Mendelbaum
2025
4.0
The Electric State
as Ted / Wingman
2025
6.5
Y llegaron de noche
as Carl Laemmle
2024
7.1
Dick Van Dyke: 98 Years of Magic
as Self - Performer
2023
7.8
Leo
as Jayda's Dad (voice)
2023
7.4
Rock, Paper, Scissors
as Jonathan Fartjoke (voice)
2023
7.4
History of the World: Part II
as Maurice Cheeks
2023
5.6
The Conspiracy
2022
0.0
Killing Me Softly with His Songs
as Self
2022
5.0
Out of Office
2022
6.1
Cinderella: The Reunion, A Special Edition of 20/20
as Self
2022
8.0
Dunston Checks Out
as Jason Alexander (archival footage)
2022
0.0
Star Trek: Prodigy
as Doctor Noum (voice)
2021
7.3
Star Trek: Prodigy
as Counselor Noum (voice)
2021
7.3
The Problem with Jon Stewart
as Jeff Bezos
2021
7.2
Broadway: Beyond the Golden Age
as Self
2021
0.0
History of the Sitcom
as Self - Actor
2021
7.0
Celebrity Wheel of Fortune
as Self - Contestant
2021
7.0
The Rocky Horror Musical Live Stream
as Narrator
2020
4.8
Faith Based
as Nicky Steele
2020
4.5
Stars in the House
as Self
2020
0.0
Stars in the House
as Self - Special Guest
2020
0.0
My Boyfriend's Meds
as Dr. Sternbach
2020
7.2
Harley Quinn
as Sy Borgman (voice)
2019
8.3
The Movies That Made Us
as Self
2019
7.2
Mad About You
as Jason Alexander
2019
8.0
The Conners
as Pastor Phil
2018
7.0
The Portuguese Kid
as Barry Dragonetti
2018
2.0
Bucky and the Squirrels
as Jason Alexander
2018
0.0
Broadway: The Next Generation
as Self
2017
10.0
Hit the Road
as Ken Swallow
2017
7.2
Young Sheldon
as Gene Lundy
2017
8.0
The Orville
as Olix
2017
7.6
Kody Kapow
as Goji (voice)
2017
0.0
The Truth Is in the Stars
as Self
2017
7.1
The Marvelous Mrs. Maisel
as Asher Friedman
2017
8.1
Dinner with Dad
as Jason Alexander
2017
0.0
The Mark Lembeck Technique
as Mark Lembeck
2016
0.0
Best Worst Thing That Ever Could Have Happened...
as Self
2016
7.5
For the Love of Spock
as Self
2016
7.4
There's Something About Romcoms
as Self
2016
6.0
The $100,000 Pyramid
as Self
2016
7.0
Match Game
as Self - Panelist
2016
6.4
Tom and Jerry: Back to Oz
as Mr. Bibb / The Nome King (voice)
2016
6.0
To Tell the Truth
as Self - Panelist
2016
6.2
The Last Laugh
as Self
2016
6.9
The Grinder
as Cliff Bemis
2015
6.7
China, Il The Musical
as Harold
2015
0.0
Larry Gaye: Renegade Male Flight Attendant
as Larry's Dad
2015
4.6
Big Time in Hollywood, Fl
as Jason Alexander
2015
7.1
The Late Late Show with James Corden
as Self
2015
5.3
Misery Loves Comedy
as Self
2015
6.0
Wild Card
as Pinky
2015
5.7
Penn Zero: Part-Time Hero
as Coach Wallace (voice)
2014
7.2
How Murray Saved Christmas
as Doc Holiday (voice)
2014
5.9
Lucky Stiff
as Vinnie Di Ruzzio
2014
4.4
The Tom and Jerry Show
as Rick (voice)
2014
7.3
TripTank
as Doctor (voice)
2014
5.2
Late Night with Seth Meyers
as Self
2014
5.3
Kirstie
as Stanford Temple
2013
4.6
Hollywood Game Night
as Self
2013
6.5
Drunk History
as William Tweed
2013
6.8
Stars in Shorts
as Sid Rosenthal
2012
4.7
Comedians in Cars Getting Coffee
as Self
2012
7.1
Comedy Bang! Bang!
as Inspector Gantlet
2012
6.2
National Lampoon's Another Dirty Movie
as Self (uncredited)
2012
2.1
🎬
Say It Ain't Solo
as Himself
2012
2.0
The Voyages of Young Doctor Dolittle
as Eugene (voice)
2011
0.0
Talking Dead
as Self
2011
7.2
China, IL
as Harold (voice)
2011
7.0
Dora the Explorer: Dora's Enchanted Forest Adventures
as Owl (voice)
2011
10.0
A Fairly Odd Movie: Grow Up, Timmy Turner!
as Cosmo
2011
4.8
Franklin & Bash
as Carter Lang
2011
7.2
Harry's Law
as Richard Cross
2011
7.3
Not Your Time
as Sid Rosenthal
2010
1.0
Quantum Quest: A Cassini Space Odyssey
as Moronic (voice)
2010
6.3
Fish Hooks
as Mr. Nibbles
2010
6.5
Fish Hooks
as Mr. Nibbles (voice)
2010
6.5
Rock Slyde
as Mailman Stan
2010
5.4
🎬
The Marriage Ref
as Self - Panelist
2010
3.8
The Cleveland Show
2009
5.9
Community
as Mountain Man
2009
8.0
Meteor
as Dr. Chetwyn
2009
6.2
Hachi: A Dog's Tale
as Carl
2009
8.0
Shatner's Raw Nerve
as Self
2008
4.0
🎬
Step It Up and Dance
2008
0.0
Jerry Seinfeld: Submarine Captain
as Himself
2007
6.5
The Grand
as Dr. Yakov Achmed
2007
5.8
Thank God You're Here
as Self
2007
0.0
Farce of the Penguins
as Penguin on Belly (voz)
2006
4.1
Rachael Ray
as Self - Guest
2006
5.1
Talkshow with Spike Feresten
2006
5.5
Comedy Central Roast of William Shatner
as Self - Roastmaster
2006
6.5
How to Go Out on a Date in Queens
as Johnny
2006
2.2
Snoop Dogg's Hood of Horror
as British Record Mogul
2006
4.8
Ira & Abby
as Dr. Morris Saperstein
2006
5.5
🎬
Where My Dogs At?
2006
7.5
The New Adventures of Old Christine
as Dr. Palmer
2006
7.1
Earth to America
as self
2005
8.0
Criminal Minds
as Prof. Rothchild
2005
8.3
Everybody Hates Chris
as Principal Edwards
2005
8.1
The Aristocrats
as Self
2005
5.9
Robot Chicken
as Krampus (voice)
2005
7.7
American Dad!
as Mr. Orlando (voice)
2005
7.0
American Dad!
as Sal (voice)
2005
7.0
The Late Late Show with Craig Ferguson
as Self
2005
6.7
A Christmas Carol
as Jacob Marley / Marley's Ghost
2004
6.4
The Seinfeld Story
as Self
2004
7.5
Seinfeld: How It Began
as Self/George Costanza
2004
7.8
🎬
Kramer vs. Kramer: Kenny to Cosmo
as Self
2004
0.0
Listen Up!
as Tony Kleinman
2004
6.2
🎬
The Tony Danza Show
as Self - Guest
2004
6.1
Two and a Half Men
as Dr. Goodman
2003
7.4
The Ellen DeGeneres Show
as Self
2003
5.6
The Very Best of America's Funniest Comedians
as Self (archive footage)
2003
0.0
101 Dalmatians II: Patch's London Adventure
as Lightning (voice)
2003
6.0
Real Time with Bill Maher
as Self
2003
6.0
Jimmy Kimmel Live!
as Self
2003
5.5
The Man Who Saved Christmas
as A.C. Gilbert
2002
6.1
The Twilight Zone
as Patient
2002
7.2
Monk
as Marty Eels
2002
8.0
The Hunchback of Notre Dame II
as Gargoyle Hugo (voice)
2002
5.4
Being 'Shallow Hal'
as Self
2001
8.0
Shallow Hal
as Mauricio Wilson
2001
6.2
Bob Patterson
as Bob Patterson
2001
6.5
🎬
Good Day Live
as Self
2001
3.0
The Legend of Tarzan
as Zutho (voice)
2001
6.9
Primetime Glick
2001
6.8
On Edge
as Zamboni Phil
2001
4.8
The Trumpet of the Swan
as Father (voice)
2001
5.5
Bravo Profiles: Penn and Teller
as Self
2001
0.0
Critics Choice Awards
as Self
2001
7.9
Disney's House of Mouse
2001
7.4
Curb Your Enthusiasm
as Jason Alexander
2000
8.0
The Huntress
2000
5.2
The Adventures of Rocky & Bullwinkle
as Boris
2000
4.3
Son of the Beach
2000
6.5
Let's Rap Fire Safety
2000
6.5
Malcolm in the Middle
as Leonard
2000
8.5
Ultimate Trek: Star Trek's Greatest Moments
as Host
1999
1.0
The N.Y. Friars Club Roast of Jerry Stiller
as Self - Roastmaster
1999
5.3
Larry David: Curb Your Enthusiasm
as Self
1999
7.5
Love and Action in Chicago
as Frank Bonner
1999
4.7
Madeline: Lost in Paris
as Uncle Horst / Henri (voice)
1999
6.7
The Late Late Show with Craig Kilborn
as Self - Guest
1999
4.6
Sideshow: Alive on the Inside
as Narrator
1999
0.0
Dilbert
as Catbert (voice)
1999
6.7
Jingle Bells
as Elf (Voice)
1999
6.0
Hollywood Squares
as Self - Panelist
1998
7.3
Hollywood Squares
as Self
1998
7.3
Hercules
as Poseidon
1998
6.9
Hercules
as Poseidon (voice)
1998
6.9
Denial
as Art Witz
1998
4.4
Titey
as Titey (voice)
1998
0.0
Cinderella
as Lionel
1997
6.5
Love! Valour! Compassion!
as Buzz Hauser
1997
6.1
The Hunchback of Notre Dame
as Gargoyle Hugo (voice)
1996
7.1
Muppets Tonight
as Self
1996
7.4
Remember WENN
as Alan Ballinger
1996
8.0
Dunston Checks In
as Robert Grant
1996
5.4
🎬
Sex, Censorship and the Silver Screen
as Quote Reader
1996
3.8
Bye Bye Birdie
as Albert J. Peterson
1995
6.1
The Last Supper
as Anti-Enviroment
1995
6.5
For Better or Worse
as Michael Makeshift
1995
4.0
Star Trek: Voyager
as Kurros
1995
7.8
A Tribute to Stephen Sondheim
1995
0.0
Friends
as Earl
1994
8.4
Blankman
as Mr. Stone
1994
5.3
North
as North's Dad
1994
5.0
The Return of Jafar
as Abis Mal - the Chief of the Thieves (voice)
1994
6.2
Down on the Waterfront
1994
5.0
The Paper
as Marion Sandusky
1994
6.6
Duckman
as Duckman (voice)
1994
7.1
Aladdin
as Abis Mal (voice)
1994
7.0
Aladdin
as Captain Albatross (voice)
1994
7.0
Aladdin
as Abis Mal / Abnor Mal (voice)
1994
7.0
The Nanny
as Jack
1993
8.1
Coneheads
as Larry Farber
1993
5.5
Sexual Healing
as Frank
1993
0.0
For Goodness Sake
as Electronics Store Customer
1993
10.0
The Larry Sanders Show
as Jason Alexander
1992
7.7
I Don't Buy Kisses Anymore
as Bernie Fishbine
1992
4.6
Dinosaurs
as Grown Baby (voice)
1991
7.8
Dinosaurs
as Stu (voice)
1991
7.8
Dinosaurs
as Gus Molehill (voice)
1991
7.8
Dinosaurs
as The Job Wizard (voice)
1991
7.8
Dinosaurs
as General H. Norman Conquest (voice)
1991
7.8
Dinosaurs
as Sexual Harris (voice)
1991
7.8
Dinosaurs
as UFO! Host / Announcer (voice)
1991
7.8
Jacob's Ladder
as Geary
1990
7.4
White Palace
as Neil
1990
6.3
Dream On
as Randall Townsend
1990
6.9
Pretty Woman
as Philip Stuckey
1990
7.5
The Simpsons
as Bourbon Verlander (voice)
1989
8.0
Seinfeld
as George Costanza
1989
8.3
Favorite Son
as Chris Van Allen
1988
4.0
LIVE with Kelly and Mark
as Self - Guest
1988
5.4
Everything's Relative
as Julian Beeby
1987
5.5
Brighton Beach Memoirs
as Pool Player #1
1986
6.6
The Mosquito Coast
as Hardware Clerk
1986
6.4
Rockabye
as Lt. Ernest Foy
1986
8.0
E/R
as Harold Stickley
1984
4.6
E/R
1984
4.6
Jeopardy!
as Self
1984
6.9
Reading Rainbow
as Self - Narrator (voice)
1983
8.3
Newhart
1982
7.1
Late Night with David Letterman
as Self
1982
5.9
Senior Trip
as Pete
1981
3.7
The Burning
as Dave
1981
6.2
A Capitol Fourth
as Self
1980
0.0
Saturday Night Live
as Self - Host
1975
7.0
Saturday Night Live
as Self - Cameo (uncredited)
1975
7.0
Tony Awards
as Self - Presenter
1956
5.9
The Emmy Awards
as Self
1949
7.9
Golden Globe Awards
as Self - Nominee
1944
7.2
Leo 2
N/A
0.0
Saturday TV Funhouse
as Titey (voice)
N/A
10.0
The Sisters Rosensweig
as Mervyn
N/A
0.0