JA
Jason Alexander
Actor, Director, Producer, Additional CreditsBorn September 23, 1959 (65 years)
Jay Scott Greenspan, 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
Filmography
| 2025 | The Gettysburg Address · as Noah Brooks (voice) |
| 2025 | |
| 2024 | Stealing Pulp Fiction · as Dr. Mendelbaum |
| 2024 | Y llegaron de noche (TV Series) |
| 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 |
| 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 (2016) (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) |
| 2005 | Criminal Minds (TV Series) · as Prof. Rothchild |
| 2005 | American Dad! (TV Series) · as Mr. Orlando (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 |
| 2003 | Jimmy Kimmel Live! (TV Series) |
| 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 |
| 2001 | Bob Patterson (TV Series) · as Bob Patterson |
| 2001 | The Legend of Tarzan (TV Series) · as Zutho (voice) |
| 2001 | Primetime Glick (TV Series) |
| 2001 | On Edge · as Zamboni Phil |
| 2001 | The Trumpet of the Swan · as Father (voice) |
| 2001 | House of Mouse (TV Series) · as Hugo |
| 2001 | Robot Chicken (TV Series) · as Krampus (voice) |
| 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 Grown Baby (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 |