JA
Jason Alexander
Actor, Director, Producer, Additional CreditsBorn September 23, 1959 (66 years)
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.
Movies & Shows on Plex
Known For
Jason Alexander Filmography
| 2026 | Jimmy · as Louis B. Mayer |
| 2025 | The Gettysburg Address · as Noah Brooks (voice) |
| 2025 | LEGO Marvel Avengers: Strange Tails (TV Series) · as Magneto (voice) |
| 2025 | The Bad Guys: Breaking In (TV Series) · as Mysterious Figure (voice) |
| 2025 | The Electric State · as Ted / Wingman |
| 2024 | Stealing Pulp Fiction · as Dr. Mendelbaum |
| 2024 | They Came at Night (TV Series) · as Carl Laemmle |
| 2024 | Rock, Paper, Scissors (TV Series) · as Jonathan Fartjoke (voice) |
| 2023 | Leo · as Jayda's Dad (voice) |
| 2023 | Jeopardy! Masters (TV Series) |
| 2023 | History of the World, Part II (TV Series) · as Maurice Cheeks |
| 2022 | |
| 2021 | Star Trek: Prodigy (TV Series) · as Counselor Noum (voice) |
| 2021 | The Problem With Jon Stewart (TV Series) · as Jeff Bezos |
| 2020 | Rocky Horror Show: Livestream Theater · as Narrator |
| 2020 | Faith Based · as Nicky Steele |
| 2020 | My Boyfriend's Meds · as Dr. Sternbach |
| 2019 | Harley Quinn (TV Series) · as Sy Borgman (voice) |
| 2019 | The Investigation: A Search for the Truth in Ten Acts · as Chris Christie |
| 2019 | Bug Diaries (TV Series) · as Cicada |
| 2018 | The Conners (TV Series) · as Pastor Phil |
| 2018 | The Portuguese Kid · as Barry Dragonetti |
| 2017 | Hit the Road (TV Series) · as Ken Swallow |
| 2017 | Young Sheldon (TV Series) · as Gene Lundy |
| 2017 | The Orville (TV Series) · as Olix |
| 2017 | Kody Kapow (TV Series) · as Goji (voice) |
| 2017 | The Marvelous Mrs. Maisel (TV Series) · as Asher Friedman |
| 2016 | Tom and Jerry: Back to Oz · as Mr. Bibb / The Nome King (voice) |
| 2016 | Animals. (TV Series) · as Algae |
| 2015 | The Hypothetical Star Wars Holiday Special · as Redge Moonhopper |
| 2015 | The Grinder (TV Series) · as Cliff Bemis |
| 2015 | Larry Gaye: Renegade Male Flight Attendant · as Larry's Dad |
| 2015 | |
| 2014 | How Murray Saved Christmas · as Doc Holiday (voice) |
| 2014 | Penn Zero: Part-Time Hero (TV Series) · as Coach Wallace (voice) |
| 2014 | Lucky Stiff · as Vinnie Di Ruzzio |
| 2014 | TripTank (TV Series) · as Doctor (voice) |
| 2013 | Kirstie (TV Series) · as Stanford Temple |
| 2013 | Drunk History (TV Series) · as William Tweed |
| 2012 | Delhi Safari · as Male Flamingo |
| 2012 | Stars in Shorts · as Sid Rosenthal |
| 2012 | Comedy Bang! Bang! (TV Series) · as Inspector Gantlet |
| 2012 | Clipaholics (TV Series) · as Narrator |
| 2011 | The Voyages of Young Doctor Dolittle · as Eugene (voice) |
| 2011 | America in Primetime (TV Series) · as George Costanza, Seinfeld |
| 2011 | Dora's Enchanted Forest Adventures · as Owl (voice) |
| 2011 | A Fairly Odd Movie: Grow Up, Timmy Turner! · as Cosmo |
| 2011 | Franklin & Bash (TV Series) · as Carter Lang |
| 2011 | The Tom and Jerry Show (2014) (TV Series) · as Rick (voice) |
| 2011 | Harry's Law (TV Series) · as Richard Cross |
| 2010 | Not Your Time · as Sid Rosenthal |
| 2010 | Quantum Quest: A Cassini Space Odyssey · as Moronic (voice) |
| 2010 | Fish Hooks (TV Series) · as Mr. Nibbles (voice) |
| 2009 | Rock Slyde · as Mailman Stan |
| 2009 | The Cleveland Show (TV Series) |
| 2009 | Community (TV Series) · as Mountain Man |
| 2009 | Glenn Martin DDS (TV Series) · as Brandon |
| 2009 | Hachi: A Dog's Tale · as Carl |
| 2009 | Meteor: Path to Destruction (TV Series) · as Dr. Chetwyn |
| 2008 | China, IL (TV Series) · as Harold (voice) |
| 2008 | Sexo en serie · as George Costanza |
| 2008 | Step It Up and Dance (TV Series) |
| 2007 | The Grand · as Dr. Yakov Achmed |
| 2006 | Farce of the Penguins · as Penguin On Belly (voice) |
| 2006 | Talkshow with Spike Feresten (TV Series) |
| 2006 | How to Go Out on a Date in Queens · as Johnny |
| 2006 | Snoop Dogg's Hood of Horror · as British Record Mogul |
| 2006 | Ira & Abby · as Dr. Morris Saperstein |
| 2006 | Where My Dogs At? (TV Series) |
| 2006 | |
| 2006 | The New Adventures of Old Christine (TV Series) · as Dr. Palmer |
| 2006 | Campus Ladies (TV Series) · as Professor |
| 2005 | Everybody Hates Chris (TV Series) · as Principal Edwards |
| 2005 | Criminal Minds (TV Series) · as Prof. Rothchild |
| 2005 | Robot Chicken (TV Series) · as Krampus (voice) |
| 2005 | American Dad! (TV Series) · as Sal (voice) |
| 2004 | A Christmas Carol: The Musical · as Jacob Marley / Marley's Ghost |
| 2004 | Listen Up (TV Series) · as Tony Kleinman |
| 2003 | Two and a Half Men (TV Series) · as Dr. Goodman |
| 2003 | Odd Job Jack (TV Series) · as Don |
| 2002 | The Man Who Saved Christmas · as A.c. Gilbert |
| 2002 | 101 Dalmatians 2: Patch's London Adventure · as Lightning (voice) |
| 2002 | The Twilight Zone (2002) (TV Series) · as Patient |
| 2002 | Gylne tider (TV Series) · as George Costanza |
| 2002 | Monk (TV Series) · as Marty Eels |
| 2002 | The Hunchback of Notre Dame II · as Gargoyle Hugo (voice) |
| 2001 | Shallow Hal · as Mauricio Wilson |
| 2001 | Bob Patterson (TV Series) · as Bob Patterson |
| 2001 | The Legend of Tarzan (TV Series) · as Zutho (voice) |
| 2001 | Primetime Glick (TV Series) |
| 2001 | |
| 2001 | The Trumpet of the Swan · as Father (voice) |
| 2001 | House of Mouse (TV Series) · as Hugo |
| 2000 | Dora the Explorer (TV Series) · as Owl |
| 2000 | The Adventures of Rocky & Bullwinkle · as Boris |
| 2000 | Son of the Beach (TV Series) |
| 2000 | The Huntress (TV Series) |
| 2000 | Malcolm in the Middle (TV Series) · as Leonard |
| 1999 | |
| 1999 | Just Looking · as Radio Announcer |
| 1999 | Love and Action in Chicago · as Frank Bonner |
| 1999 | Madeline: Lost in Paris · as Uncle Horst / Henri (voice) |
| 1999 | Sideshow: Alive on the Inside · as Narrator |
| 1999 | Dilbert (TV Series) · as Catbert (voice) |
| 1999 | Jingle Bells · as Elf (voice) |
| 1998 | Hercules (TV Series) · as Poseidon (voice) |
| 1998 | It's Tough to Be a Bug · as Weevil Kneevil |
| 1998 | Denial · as Art Witz |
| 1997 | Cinderella · as Lionel |
| 1997 | Love! Valour! Compassion! · as Buzz Hauser |
| 1996 | Sex and the Silver Screen (TV Series) · as Quote Reader |
| 1996 | The Hunchback of Notre Dame · as Gargoyle Hugo (voice) |
| 1996 | Remember WENN (TV Series) · as Alan Ballinger |
| 1996 | Dunston Checks In · as Robert Grant |
| 1995 | Bye Bye Birdie · as Albert J. Peterson |
| 1995 | The Last Supper · as Anti-Enviroment |
| 1995 | For Better or Worse · as Michael Makeshift |
| 1995 | Star Trek: Voyager (TV Series) · as Kurros |
| 1994 | Friends (TV Series) · as Earl |
| 1994 | Aladdin (TV Series) · as Abis Mal (voice) |
| 1994 | Blankman · as Mr. Stone |
| 1994 | North · as North's Dad |
| 1994 | The Return of Jafar · as Abis Mal - The Chief Of The Thieves (voice) |
| 1994 | The Paper · as Marion Sandusky |
| 1994 | Duckman (TV Series) · as Duckman (voice) |
| 1993 | The Nanny (TV Series) · as Jack |
| 1993 | Coneheads · as Larry Farber |
| 1993 | Sexual Healing · as Frank |
| 1992 | I Don't Buy Kisses Anymore · as Bernie Fishbine |
| 1991 | Dinosaurs (TV Series) · as The Job Wizard (voice) |
| 1990 | Jacob's Ladder · as Geary |
| 1990 | White Palace · as Neil |
| 1990 | Dream On (TV Series) · as Randall Townsend |
| 1990 | Pretty Woman · as Philip Stuckey |
| 1989 | The Simpsons (TV Series) · as Bourbon Verlander (voice) |
| 1989 | Seinfeld (TV Series) · as George Costanza |
| 1988 | Favorite Son (TV Series) · as Chris Van Allen |
| 1987 | Biography (TV Series) · as Passages Read By |
| 1986 | Brighton Beach Memoirs · as Pool Player #1 |
| 1986 | The Mosquito Coast · as Hardware Clerk |
| 1986 | Rockabye · as Lt. Ernest Foy |
| 1984 | E/R (1984) (TV Series) · as Harold Stickley |
| 1982 | Newhart (TV Series) |
| 1981 | Senior Trip · as Pete |
| 1981 | The Burning · as Dave |
| 1968 | One Life to Live (TV Series) · as Craig |
| 2017 | Young Sheldon (TV Series) |
| 2011 | Franklin & Bash (TV Series) |
| 2010 | Mike & Molly (TV Series) |
| 2006 | 'Til Death (TV Series) |
| 2006 | Campus Ladies (TV Series) |
| 2005 | Everybody Hates Chris (TV Series) |
| 2005 | Criminal Minds (TV Series) |
| 1999 | |
| 1996 | Remember WENN (TV Series) |
| 1995 | |
| 1989 | Seinfeld (TV Series) |
| 2025 | Paddy Chayefsky: Collector of Words · as Self |
| 2023 | Dick Van Dyke 98 Years of Magic · as Self - Performer |
| 2022 | |
| 2022 | |
| 2022 | Cinderella: The Reunion · as Self |
| 2021 | The 73rd Primetime Emmy Awards · as Self |
| 2021 | Broadway: Beyond the Golden Age · as Self |
| 2021 | History of the Sitcom (TV Series) · as Self - Actor |
| 2021 | Hanging with Doctor Z (TV Series) · as Self - Guest |
| 2021 | Celebrity Wheel of Fortune (TV Series) · as Self - Contestant |
| 2020 | Stars In The House (TV Series) · as Self |
| 2020 | |
| 2019 | The Movies That Made Us (TV Series) · as Self - Actor 'philip Stuckey' |
| 2018 | The '90s Greatest (TV Series) · as Self |
| 2018 | Betty White: First Lady of Television · as Self |
| 2017 | The Truth Is in the Stars · as Self |
| 2017 | Hollywood First Look Features (TV Series) · as Self |
| 2016 | |
| 2016 | For the Love of Spock · as Self |
| 2016 | Match Game (2016) (TV Series) · as Self - Panelist |
| 2016 | The $100,000 Pyramid (2016) (TV Series) · as Self |
| 2016 | To Tell The Truth (2016) (TV Series) · as Self - Panelist |
| 2016 | The Last Laugh · as Self |
| 2015 | Bucky and the Squirrels · as Jason Alexander |
| 2015 | The Late Show with Stephen Colbert (TV Series) · as Self - Guest |
| 2015 | The 69th Annual Tony Awards · as Self - Presenter |
| 2015 | Misery Loves Comedy · as Self |
| 2015 | Big Time in Hollywood, FL (TV Series) · as Jason Alexander |
| 2015 | The Late Late Show with James Corden (TV Series) · as Self |
| 2014 | |
| 2014 | Riot (TV Series) · as Self - Guest Captain |
| 2014 | Late Night with Seth Meyers (TV Series) · as Self |
| 2014 | The Tonight Show Starring Jimmy Fallon (TV Series) · as Self - Guest |
| 2013 | Hollywood Game Night (TV Series) · as Self |
| 2012 | Comedians in Cars Getting Coffee (TV Series) · as Self |
| 2012 | Larry King Now (TV Series) · as Self - Guest |
| 2012 | Another Dirty Movie · as Self (uncredited) |
| 2011 | Talking Dead (TV Series) · as Self |
| 2011 | Joan & Melissa: Joan Knows Best? (TV Series) · as Self |
| 2010 | |
| 2010 | The Talk (TV Series) · as Self - Guest |
| 2010 | Access Hollyood Live (TV Series) · as Self |
| 2010 | The Marriage Ref (TV Series) · as Self - Panelist |
| 2009 | The Project (2009) (TV Series) · as Self |
| 2009 | The Tonight Show with Conan O'Brien (TV Series) · as Self - Guest |
| 2009 | Kevin Pollak's Chat Show (TV Series) · as Self - Guest |
| 2009 | Make 'Em Laugh: The Funny Business of America (TV Series) · as Self - Actor |
| 2009 | The 14th Annual Critics' Choice Awards · as Self |
| 2008 | Shatner's Raw Nerve (TV Series) · as Self |
| 2008 | The Wendy Williams Show (TV Series) · as Self - Guest |
| 2007 | Thank God You're Here (US) (TV Series) · as Self |
| 2007 | Poker After Dark (TV Series) · as Self |
| 2006 | Matthew Gray Gubler: The Unauthorized Documentary (TV Series) · as Self |
| 2006 | |
| 2006 | Rachael Ray (TV Series) · as Self - Guest |
| 2006 | Comedy Central Roast of William Shatner · as Self - Roastmaster |
| 2006 | 9am with David & Kim (TV Series) · as Self |
| 2005 | Earth to America · as Self |
| 2005 | The Aristocrats · as Self |
| 2005 | The 31st Annual People's Choice Awards · as Self |
| 2005 | The Late Late Show with Craig Ferguson (TV Series) · as Self |
| 2004 | The Seinfeld Story · as Self |
| 2004 | Seinfeld: How It Began · as Self/george Costanza |
| 2004 | The Tony Danza Show (TV Series) · as Self - Guest |
| 2004 | The 46th Annual Grammy Awards · as Self - Presenter |
| 2003 | Celebrity Poker Showdown (TV Series) · as Self |
| 2003 | Eretz Nehederet (TV Series) · as Self |
| 2003 | |
| 2003 | The Ellen DeGeneres Show (TV Series) · as Self |
| 2003 | Comedy Central Roasts (TV Series) · as Self - Roastmaster |
| 2003 | The 57th Annual Tony Awards · as Self - Presenter |
| 2003 | Real Time with Bill Maher (TV Series) · as Self |
| 2003 | Jimmy Kimmel Live! (TV Series) · as Self |
| 2003 | The 29th Annual People's Choice Awards · as Self |
| 2002 | Stage on Screen: The Women · as Self - Host |
| 2002 | Storyline Online (TV Series) · as Self |
| 2001 | Good Day Live (TV Series) · as Self |
| 2001 | Critics' Choice Awards (TV Series) · as Self |
| 2000 | Curb Your Enthusiasm (TV Series) · as Jason Alexander |
| 1999 | The N.Y. Friars Club Roast of Jerry Stiller · as Self - Roastmaster |
| 1999 | Larry David: Curb Your Enthusiasm · as Self |
| 1999 | The Martin Short Show (1999) (TV Series) · as Self - Guest |
| 1999 | Who Wants to Be a Millionaire (US) (TV Series) · as Self - Contestant |
| 1999 | The Late Late Show with Craig Kilborn (TV Series) · as Self - Guest |
| 1998 | Hollywood Squares (TV Series) · as Self - Panelist |
| 1998 | Comic Relief VIII · as Self |
| 1998 | 4th Annual Screen Actors Guild Awards · as Self - Winner & Nominee |
| 1998 | The 55th Annual Golden Globe Awards · as Self |
| 1998 | The 50th Annual Primetime Emmy Awards · as Self - Nominee |
| 1997 | The 49th Annual Primetime Emmy Awards · as Self - Nominee |
| 1997 | The View (TV Series) · as Self |
| 1997 | 3rd Annual Screen Actors Guild Awards · as Self - Winner & Nominee |
| 1997 | The 23rd Annual People's Choice Awards · as Self - Accepting Award For Favorite Television Comedy Series |
| 1996 | Life and Times (TV Series) · as Self |
| 1996 | Access Hollywood (TV Series) · as Self |
| 1996 | The Rosie O'Donnell Show (TV Series) · as Self - Guest |
| 1996 | Muppets Tonight (TV Series) · as Self |
| 1996 | Good Money · as Self |
| 1995 | The Single Guy (TV Series) · as Jason Alexander |
| 1995 | The 47th Annual Primetime Emmy Awards · as Self - Host & Nominee |
| 1995 | 50 Years of Funny Females · as Self |
| 1995 | 1st Annual Screen Actors Guild Awards · as Self - Winner |
| 1995 | The 52nd Annual Golden Globe Awards · as Self - Nominee |
| 1994 | The 46th Annual Primetime Emmy Awards · as Self - Nominee & Performer |
| 1994 | WGN Morning News (TV Series) · as Self |
| 1994 | The Howard Stern Show (TV Series) · as Self - Guest |
| 1994 | Dennis Miller Live (TV Series) · as Self |
| 1994 | Comic Relief VI · as Self |
| 1993 | |
| 1993 | The 45th Annual Primetime Emmy Awards · as Self - Nominee |
| 1993 | Politically Incorrect (TV Series) · as Self |
| 1993 | The 50th Annual Golden Globe Awards · as Self - Nominee |
| 1993 | WWE Raw (TV Series) · as Self |
| 1992 | Late Show with David Letterman (TV Series) · as Self - Guest |
| 1992 | Mad About You (TV Series) · as Jason Alexander |
| 1992 | The Larry Sanders Show (TV Series) · as Jason Alexander |
| 1992 | HBO First Look (TV Series) · as Self |
| 1992 | The Tonight Show with Jay Leno (TV Series) · as Self - Guest |
| 1992 | Comic Relief V · as Self |
| 1991 | Charlie Rose (TV Series) · as Self - Guest |
| 1991 | Maury (TV Series) · as Self - Guest |
| 1989 | Not the Same Person You Used to Know (TV Series) · as Self |
| 1988 | LIVE with Kelly and Mark (TV Series) · as Self - Guest |
| 1986 | At The Movies (TV Series) · as Self |
| 1986 | The Oprah Winfrey Show (TV Series) · as Self - Guest |
| 1984 | Jeopardy! (TV Series) · as Self |
| 1983 | Sally Jessy Raphael (TV Series) · as Self |
| 1983 | Reading Rainbow (TV Series) · as Self - Narrator (voice) |
| 1982 | Late Night With David Letterman (TV Series) · as Self |
| 1981 | Entertainment Tonight (TV Series) · as Self |
| 1981 | An Evening At the Improv (TV Series) · as Self - Host |
| 1980 | A Capitol Fourth (TV Series) · as Self |
| 1979 | SAG Foundation Conversations (TV Series) · as Self |
| 1978 | 20/20 (TV Series) · as Self |
| 1975 | Saturday Night Live (TV Series) · as Self - Cameo (uncredited) |
| 1975 | Good Morning America (TV Series) · as Self - Guest |
| 1974 | The $25,000 Pyramid (1982) (TV Series) · as Self - Celebrity Contestant |
| 1973 | The $10,000 Pyramid (TV Series) · as Self - Celebrity Contestant |
| 1968 | 60 Minutes (TV Series) · as Self - Actor (segment "seinfeld") |
| 1966 | The Jerry Lewis MDA Labor Day Telethon (TV Series) · as Self |
| 1962 | The Tonight Show starring Johnny Carson (TV Series) · as Self - Guest |
| 1962 | The Merv Griffin Show (TV Series) · as Self - Actor Forbidden Broadway |
| 1956 | Tony Awards (TV Series) · as Self - Presenter |
| 1952 | Today (TV Series) · as Self - Guest |
| 1949 | The Emmy Awards (TV Series) · as Self |
| 1944 | Golden Globe Awards (TV Series) · as Self - Nominee |
| 2017 | Hit the Road (TV Series) · as Executive Producer |
| 2004 | Listen Up (TV Series) |
| 2004 | Agent Cody Banks 2: Destination London · as Executive Producer |
| 2003 | Agent Cody Banks · as Executive Producer |
| 2001 | Bob Patterson (TV Series) · as Executive Producer |
| 1999 | Ultimate Trek: Star Trek's Greatest Moments · as Executive Producer |
| 2017 | Hit the Road (TV Series) · as Created By |
| 2001 | Bob Patterson (TV Series) · as Story |