Jimmy
2026 · Movie
as Louis B. Mayer
Jason Alexander
1959-09-23
•
Newark, New Jersey, USA
Writers: Dinner with Dad
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.
Filmography
Mating Season
2026 · TV Show
as Alan (voice)
The Electric State
2025 · Movie
as Ted / Wingman
Stealing Pulp Fiction
2025 · Movie
as Dr. Mendelbaum
The Gettysburg Address
2025 · Movie
as Noah Brooks (voice)
Paddy Chayefsky: Collector of Words
2025 · Movie
as Self
The Bad Guys: The Series
2025 · TV Show
as Mysterious Figure (voice), D.B. Cougar (voice)
LEGO Marvel Avengers: Strange Tails
2025 · TV Show
as Magneto (voice)
Rock, Paper, Scissors
2024 · TV Show
as Jonathan Fartjoke (voice)
Y llegaron de noche
2024 · TV Show
as Carl Laemmle
Leo
2023 · Movie
as Jayda's Dad (voice)
Dick Van Dyke: 98 Years of Magic
2023 · Movie
as Self - Performer
History of the World: Part II
2023 · TV Show
as Maurice Cheeks
Cinderella: The Reunion, A Special Edition of 20/20
2022 · Movie
as Self
Out of Office
2022 · Movie
Killing Me Softly with His Songs
2022 · Movie
as Self
The Conspiracy
2022 · Movie
Dunston Checks Out
2022 · Movie
as Jason Alexander (archival footage)
Broadway: Beyond the Golden Age
2021 · Movie
as Self
History of the Sitcom
2021 · TV Show
as Self - Actor
Star Trek: Prodigy
2021 · TV Show
as Doctor Noum (voice), Counselor Noum (voice)
Celebrity Wheel of Fortune
2021 · TV Show
as Self - Contestant
The Problem with Jon Stewart
2021 · TV Show
as Jeff Bezos
My Boyfriend's Meds
2020 · Movie
as Dr. Sternbach
Faith Based
2020 · Movie
as Nicky Steele
The Rocky Horror Musical Live Stream
2020 · Movie
as Narrator
Stars in the House
2020 · TV Show
as Self, Self - Special Guest
Who Wants to Be a Millionaire
2020 · TV Show
as Self - Contestant
The Movies That Made Us
2019 · TV Show
as Self
Harley Quinn
2019 · TV Show
as Sy Borgman (voice)
Mad About You
2019 · TV Show
as Jason Alexander
Bucky and the Squirrels
2018 · Movie
as Jason Alexander
The Portuguese Kid
2018 · Movie
as Barry Dragonetti
The Conners
2018 · TV Show
as Pastor Phil
The Truth Is in the Stars
2017 · Movie
as Self
Hit the Road
2017 · TV Show
as Ken Swallow
Dinner with Dad
2017 · TV Show
as Jason Alexander
The Marvelous Mrs. Maisel
2017 · TV Show
as Asher Friedman
Kody Kapow
2017 · TV Show
as Goji (voice)
The Orville
2017 · TV Show
as Olix
Young Sheldon
2017 · TV Show
as Gene Lundy
There's Something About Romcoms
2016 · Movie
as Self
The Last Laugh
2016 · Movie
as Self (archive footage) (uncredited)
For the Love of Spock
2016 · Movie
as Self
Best Worst Thing That Ever Could Have Happened...
2016 · Movie
as Self
Tom and Jerry: Back to Oz
2016 · Movie
as Mr. Bibb / The Nome King (voice)
The Mark Lembeck Technique
2016 · Movie
as Mark Lembeck
Match Game
2016 · TV Show
as Self - Panelist
The $100,000 Pyramid
2016 · TV Show
as Self
To Tell the Truth
2016 · TV Show
as Self - Panelist
Wild Card
2015 · Movie
as Pinky
Misery Loves Comedy
2015 · Movie
as Self
Larry Gaye: Renegade Male Flight Attendant
2015 · Movie
as Larry's Dad
China, Il The Musical
2015 · Movie
as Harold
The Grinder
2015 · TV Show
as Cliff Bemis
The Late Late Show with James Corden
2015 · TV Show
as Self
Big Time in Hollywood, Fl
2015 · TV Show
as Jason Alexander
The Late Show with Stephen Colbert
2015 · TV Show
as Self - Guest
Lucky Stiff
2014 · Movie
as Vinnie Di Ruzzio
How Murray Saved Christmas
2014 · Movie
as Doc Holiday (voice)
Late Night with Seth Meyers
2014 · TV Show
as Self - Guest
The Tom and Jerry Show
2014 · TV Show
as Rick (voice)
Penn Zero: Part-Time Hero
2014 · TV Show
as Coach Wallace (voice)
TripTank
2014 · TV Show
as Doctor (voice)
Drunk History
2013 · TV Show
as William Tweed
Kirstie
2013 · TV Show
as Stanford Temple
Hollywood Game Night
2013 · TV Show
as Self
Stars in Shorts
2012 · Movie
as Sid Rosenthal
National Lampoon's Another Dirty Movie
2012 · Movie
as Self (uncredited)
No image
Say It Ain't Solo
2012 · Movie
as Self
Comedy Bang! Bang!
2012 · TV Show
as Inspector Gantlet
Comedians in Cars Getting Coffee
2012 · TV Show
as Self
A Fairly Odd Movie: Grow Up, Timmy Turner!
2011 · Movie
as Cosmo
The Voyages of Young Doctor Dolittle
2011 · Movie
as Eugene (voice)
Dora the Explorer: Dora's Enchanted Forest Adventures
2011 · Movie
as Owl (voice)
Talking Dead
2011 · TV Show
as Self
China, IL
2011 · TV Show
as Harold (voice)
Harry's Law
2011 · TV Show
as Richard Cross
Franklin & Bash
2011 · TV Show
as Carter Lang
Quantum Quest: A Cassini Space Odyssey
2010 · Movie
as Moronic (voice)
Rock Slyde
2010 · Movie
as Mailman Stan
Not Your Time
2010 · Movie
as Sid Rosenthal
No image
The Marriage Ref
2010 · TV Show
as Self - Panelist
Fish Hooks
2010 · TV Show
as Mr. Nibbles, Mr. Nibbles (voice)
Hachi: A Dog's Tale
2009 · Movie
as Carl
The Cleveland Show
2009 · TV Show
Meteor
2009 · TV Show
as Dr. Chetwyn
Community
2009 · TV Show
as Mountain Man
No image
Step It Up and Dance
2008 · TV Show
Shatner's Raw Nerve
2008 · TV Show
as Self
Jerry Seinfeld: Submarine Captain
2007 · Movie
as Self
The Grand
2007 · Movie
as Dr. Yakov Achmed
Thank God You're Here
2007 · TV Show
as Self
Farce of the Penguins
2006 · Movie
as Penguin on Belly (voice)
Snoop Dogg's Hood of Horror
2006 · Movie
as British Record Mogul
How to Go Out on a Date in Queens
2006 · Movie
as Johnny
Comedy Central Roast of William Shatner
2006 · Movie
as Self - Roastmaster
Ira & Abby
2006 · Movie
as Dr. Morris Saperstein
Talkshow with Spike Feresten
2006 · TV Show
The New Adventures of Old Christine
2006 · TV Show
as Dr. Palmer
No image
Where My Dogs At?
2006 · TV Show
Rachael Ray
2006 · TV Show
as Self - Guest
The Aristocrats
2005 · Movie
as Self
Earth to America
2005 · Movie
as self
Everybody Hates Chris
2005 · TV Show
as Principal Edwards
The Late Late Show with Craig Ferguson
2005 · TV Show
as Self
American Dad!
2005 · TV Show
as Mr. Orlando (voice), Sal (voice)
Criminal Minds
2005 · TV Show
as Prof. Rothchild
Robot Chicken
2005 · TV Show
as Krampus (voice)
A Christmas Carol
2004 · Movie
as Jacob Marley / Marley's Ghost
Seinfeld: How It Began
2004 · Movie
as Self/George Costanza
The Seinfeld Story
2004 · Movie
as Self
Kramer vs. Kramer: Kenny to Cosmo
2004 · Movie
as Self
No image
The Tony Danza Show
2004 · TV Show
as Self - Guest
Listen Up!
2004 · TV Show
as Tony Kleinman
101 Dalmatians II: Patch's London Adventure
2003 · Movie
as Lightning (voice)
The Very Best of America's Funniest Comedians
2003 · Movie
as Self (archive footage)
The Ellen DeGeneres Show
2003 · TV Show
as Self
Jimmy Kimmel Live!
2003 · TV Show
as Self
Two and a Half Men
2003 · TV Show
as Dr. Goodman
Real Time with Bill Maher
2003 · TV Show
as Self
The Hunchback of Notre Dame II
2002 · Movie
as Gargoyle Hugo (voice)
The Man Who Saved Christmas
2002 · Movie
as A.C. Gilbert
Monk
2002 · TV Show
as Marty Eels
The Twilight Zone
2002 · TV Show
as Patient
Shallow Hal
2001 · Movie
as Mauricio Wilson
The Trumpet of the Swan
2001 · Movie
as Father (voice)
Being 'Shallow Hal'
2001 · Movie
as Self
Bravo Profiles: Penn and Teller
2001 · Movie
as Self
On Edge
2001 · Movie
as Zamboni Phil
The Legend of Tarzan
2001 · TV Show
as Zutho (voice)
Disney's House of Mouse
2001 · TV Show
Bob Patterson
2001 · TV Show
as Bob Patterson
No image
Good Day Live
2001 · TV Show
as Self
Critics Choice Awards
2001 · TV Show
as Self
Primetime Glick
2001 · TV Show
The Adventures of Rocky & Bullwinkle
2000 · Movie
as Boris
Let's Rap Fire Safety
2000 · Movie
Son of the Beach
2000 · TV Show
The Huntress
2000 · TV Show
Curb Your Enthusiasm
2000 · TV Show
as Jason Alexander
Malcolm in the Middle
2000 · TV Show
as Leonard
Madeline: Lost in Paris
1999 · Movie
as Uncle Horst / Henri (voice)
Jingle Bells
1999 · Movie
as Elf (Voice)
Sideshow: Alive on the Inside
1999 · Movie
as Narrator
Ultimate Trek: Star Trek's Greatest Moments
1999 · Movie
as Host
Larry David: Curb Your Enthusiasm
1999 · Movie
as Self
The N.Y. Friars Club Roast of Jerry Stiller
1999 · Movie
as Self - Roastmaster
Love and Action in Chicago
1999 · Movie
as Frank Bonner
The Late Late Show with Craig Kilborn
1999 · TV Show
as Self - Guest
Dilbert
1999 · TV Show
as Catbert (voice)
Denial
1998 · Movie
as Art Witz
Titey
1998 · Movie
as Titey (voice)
Hercules
1998 · TV Show
as Poseidon, Poseidon (voice)
Hollywood Squares
1998 · TV Show
as Self - Panelist
Cinderella
1997 · Movie
as Lionel
Love! Valour! Compassion!
1997 · Movie
as Buzz Hauser
The Hunchback of Notre Dame
1996 · Movie
as Gargoyle Hugo (voice)
Dunston Checks In
1996 · Movie
as Robert Grant
The Making of Disney's The Hunchback of Notre Dame
1996 · Movie
Muppets Tonight
1996 · TV Show
as Self
Remember WENN
1996 · TV Show
as Alan Ballinger
The Last Supper
1995 · Movie
as Anti-Enviroment
Bye Bye Birdie
1995 · Movie
as Albert J. Peterson
For Better or Worse
1995 · Movie
as Michael Makeshift
A Tribute to Stephen Sondheim
1995 · Movie
Star Trek: Voyager
1995 · TV Show
as Kurros
Blankman
1994 · Movie
as Mr. Stone
North
1994 · Movie
as North's Dad
The Paper
1994 · Movie
as Marion Sandusky
Down on the Waterfront
1994 · Movie
The Return of Jafar
1994 · Movie
as Abis Mal - the Chief of the Thieves (voice)
Duckman
1994 · TV Show
as Duckman (voice)
Friends
1994 · TV Show
as Earl
Aladdin
1994 · TV Show
as Abis Mal (voice), Captain Albatross (voice), Abis Mal / Abnor Mal (voice)
Coneheads
1993 · Movie
as Larry Farber
For Goodness Sake
1993 · Movie
as Electronics Store Customer
Sexual Healing
1993 · Movie
as Frank
The Nanny
1993 · TV Show
as Jack
I Don't Buy Kisses Anymore
1992 · Movie
as Bernie Fishbine
The Larry Sanders Show
1992 · TV Show
as Jason Alexander
Dinosaurs
1991 · TV Show
as Grown Baby (voice), Stu (voice), The Job Wizard (voice), Gus Molehill (voice), Sexual Harris (voice), General H. Norman Conquest (voice), UFO! Host / Announcer (voice)
Pretty Woman
1990 · Movie
as Philip Stuckey
Jacob's Ladder
1990 · Movie
as Geary
White Palace
1990 · Movie
as Neil
Dream On
1990 · TV Show
as Randall Townsend
Seinfeld
1989 · TV Show
as George Costanza
The Simpsons
1989 · TV Show
as Bourbon Verlander (voice)
Favorite Son
1988 · TV Show
as Chris Van Allen
LIVE with Kelly and Mark
1988 · TV Show
as Self - Guest
Everything's Relative
1987 · TV Show
as Julian Beeby
Brighton Beach Memoirs
1986 · Movie
as Pool Player #1
The Mosquito Coast
1986 · Movie
as Hardware Clerk
Rockabye
1986 · Movie
as Lt. Ernest Foy
E/R
1984 · TV Show
as Harold Stickley
Jeopardy!
1984 · TV Show
as Self, Self - Clue Presenter
Reading Rainbow
1983 · TV Show
as Self - Narrator (voice)
Newhart
1982 · TV Show
Late Night with David Letterman
1982 · TV Show
as Self
The Burning
1981 · Movie
as Dave
Senior Trip
1981 · Movie
as Pete
A Capitol Fourth
1980 · TV Show
as Self
Saturday Night Live
1975 · TV Show
as Self - Host, Titey (voice), Self (uncredited)
People's Choice Awards
1975 · TV Show
as Self - Host
Tony Awards
1956 · TV Show
as Self - Presenter
The Emmy Awards
1949 · TV Show
as Self
Golden Globe Awards
1944 · TV Show
as Self - Nominee
Broadway: The Next Generation
· Movie
as Self
The Sisters Rosensweig
· Movie
as Mervyn
Leo 2
· Movie
Saturday TV Funhouse
· TV Show
as Titey (voice)
Crew Credits
Dinner with Dad
2017 · TV Show
Writer
Young Sheldon
2017 · TV Show
Director
The Mark Lembeck Technique
2016 · Movie
Consulting Producer
Mike & Molly
2010 · TV Show
Director
Campus Ladies
2006 · TV Show
Director
Everybody Hates Chris
2005 · TV Show
Director
Criminal Minds
2005 · TV Show
Director
Agent Cody Banks 2: Destination London
2004 · Movie
Executive Producer
Agent Cody Banks
2003 · Movie
Executive Producer
Bob Patterson
2001 · TV Show
Executive Producer, Story, Teleplay, Creator
Just Looking
1999 · Movie
Director
Remember WENN
1996 · TV Show
Director
For Better or Worse
1995 · Movie
Director
Seinfeld
1989 · TV Show
Director
