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