Jason Alexander is a Screen Actors Guild Award and American Comedy Award winning American Actor. He is best known for portraying the nervous George Costanza on the award-winning show Seinfeld. He recently starred in the short-lived sitcom Listen Up.
 Biography
 Roles
 Starring Roles
 Guest Starring Roles
| Series | Role | Episode | Airdate | 
| Newhart | Jim Ramming | 6x24 - Courtin' Disaster | May 9, 1988 | 
| Dinosaurs | The Job Wizard | 2x08 - Career Opportunities | November 6, 1991 | 
| Dinosaurs | Gus Molehill | 2x11 - Switched at Birth | November 27, 1991 | 
| Dinosaurs | Sexual Harris | 2x13 - What "Sexual Harris" Meant | December 18, 1991 | 
| Dinosaurs | General H. Norman Conquest | 2x20 - Nuts to War (2) | February 26, 1992 | 
| Dinosaurs | Stu | 3x05 - Little Boy Boo | October 30, 1992 | 
| Dinosaurs | Grown Baby | 3x15 - Steroids to Heaven | February 12, 1993 | 
| Dinosaurs | UFO! Host/Announcer | 3x20 - We Are Not Alone | May 2, 1993 | 
| Saturday Night Live | Himself/Host | 18x17 - Jason Alexander/Peter Gabriel | April 10, 1993 | 
| Dream On | Randall Townsend | 4x01 - Oral Sex, Lies, and Video Tape | June 2, 1993 | 
| The Larry Sanders Show | Himself | 3x03 - Would You Do Me a Favor? | July 6, 1994 | 
| Muppets Tonight | Himself | 1x08 - Show 8 | June 30, 1996 | 
| The Nanny | Jack | 4x01 - The Tart with Heart (2) | September 18, 1996 | 
| The Single Guy | Himself | 2x18 - Grandfather Clause | March 26, 1997 | 
| Remember WENN | Alan Ballinger | 3x08 - Nothing Up My Sleeve | October 11, 1997 | 
| The Larry Sanders Show | Himself | 6x06 - Adolf Hankler | April 19, 1998 | 
| Star Trek: Voyager | Kurros | 5x20 - Think Tank | March 31, 1999 | 
| Friends | Earl | 7x13 - The One Where Rosita Dies | February 1, 2001 | 
| Walker, Texas Ranger | Marshall | 9x17 - Medieval Crimes | April 21, 2001 | 
| The Huntress | Himself | 1x18 - Undercover | June 10, 2001 | 
| Curb Your Enthusiasm | Himself | 2x01 - The Car Salesman | September 23, 2001 | 
| Curb Your Enthusiasm | Himself | 2x02 - Thor | September 30, 2001 | 
| Son of the Beach | Tex Finklestein | 3x01 - Penetration Island | June 18, 2002 | 
| The Twilight Zone | Death | 1x02 - One Night at Mercy | September 18, 2002 | 
| Malcolm in the Middle | Leonard | 4x19 - Future Malcolm | May 4, 2003 | 
| Monk | Marty Eels | 4x01 - Mr. Monk and the Other Detective | July 8, 2005 | 
| Odd Job Jack | Don | 3x01 - Twenty-One You're Dead | July 21, 2006 | 
| Everybody Hates Chris | Principal Edwards | 2x06 - Everybody Hates the Buddy System | November 6, 2006 | 
| Campus Ladies | Professor | 2x02 - A Very Special Episode | December 5, 2006 | 
| Everybody Hates Chris | Principal Edwards | 2x13 - Everybody Hates Snow Day | February 5, 2007 | 
| Studio 60 on the Sunset Strip | Himself | 1x21 - K&R (3) | June 21, 2007 | 
| The New Adventures of Old Christine | Dr. Palmer | 3x10 - One and a Half Men | March 31, 2008 | 
 Specials and Made-for-TV Movies
| Title | Role | Airdate | Series/Banner | 
| Senior Trip | Pete | December 30, 1981 |  | 
| Rockabye | Lt. Ernest Foy | January 12, 1986 |  | 
| The First Annual Comedy Hall of Fame | Himself | 1993 | Comedian Hall of Fame | 
| A Celebration of the Performing Arts | Himself | December 29, 1993 | The Kennedy Center Honors | 
| Comic Relief VI | Himself | January 15, 1994 | Comic Relief | 
| The 47th Annual Primetime Emmy Awards | Himself - Host | September 10, 1995 | Primetime Emmy Awards | 
| Bye Bye Birdie | Albert J. Peterson | December 3, 1995 |  | 
| The Making of Disney's 'The Hunchback of Notre Dame' | Himself - Host | 1996 |  | 
| Cinderella | Lionel | November 2, 1997 |  | 
| 3rd Annual Screen Actors Guild Awards | Himself | 1997 | Screen Actors Guild Awards | 
| The Best of Muppets Tonight | Himself | December 21, 1997 | Muppets Tonight | 
| Comic Relief VIII | Himself | June 14, 1998 | Comic Relief | 
| Jingle Bells | Elf | 1999 |  | 
| Larry David: Curb Your Enthusiasm | Himself | October 17, 1999 | Curb Your Enthusiasm | 
| The N.Y. Friars Club Roast of Jerry Stiller | Himself | October 27, 1999 | The NY Friars Club Roast | 
| Ultimate Trek: Star Trek's Greatest Moments | Capt. Kirk | December 1, 1999 |  | 
| Get into My Shorts | Himself | March 20, 2001 |  | 
| The Women | Host | June 18, 2002 | Stage on Screen | 
| The Man who Saved Christmas | A.C. Gilbert | December 15, 2002 |  | 
| The 57th Annual Tony Awards | Himself - Host | June 8, 2003 | Tony Awards | 
| A Life of Laughter: Remembering John Ritter | Himself | September 16, 2003 |  | 
| The 46th Annual Grammy Awards | Himself - Presenter | February 8, 2004 | Grammy Awards | 
| Channel Chasers | Nickelodeon Manager | July 23, 2004 | The Fairly OddParents | 
| A Christmas Carol | Jacob Marley/Marley's Ghost | November 28, 2004 |  | 
| The 31st Annual People's Choice Awards | Himself | January 9, 2005 | People's Choice Awards | 
| Unforgettable Moments in Television Entertainment | Himself | September 17, 2005 |  | 
| Mississippi Rising | Himself | October 1, 2005 |  | 
| Earth to America | Himself | November 20, 2005 |  | 
| The Aristocrats | Himself | 2006 | Hollywood's Master Storytellers | 
| A Capitol Fourth | Himself | July 4, 2006 |  | 
| Comedy Central Roast of William Shatner | Himself - Roastmaster | August 20, 2006 | Comedy Central Roast | 
| Neil Simon | Himself | 2006 | The Mark Twain Prize | 
 Talk, News and Game Show Appearances
| Series | Episode | Airdate | 
| Maury |  | September 18, 1991 | 
| Maury |  | July 22, 1992 | 
| Maury |  | April 2, 1993 | 
| Maury |  | October 15, 1993 | 
| The Tonight Show with Jay Leno |  | March 17, 1994 | 
| Maury |  | February 8, 1995 | 
| Dennis Miller Live | Psychotherapy | March 29, 1996 | 
| The Rosie O'Donnel Show |  | February 26, 1997 | 
| Howard Stern |  | January 16, 1996 | 
| Late Show with David Letterman | Show 807 | March 29, 1996 | 
| Politically Incorrect |  | November 18, 1997 | 
| Howard Stern |  | May 13, 1998 | 
| Hollywood Squares |  | February 8-12, 1999 | 
| The Martin Short Show | Show 52 | November 23, 1999 | 
| The Howard Stern Radio Show |  | May 1, 1999 | 
| Howard Stern |  | June 24, 1999 | 
| Hollywood Squares |  | September 27-October 1, 1999 | 
| The Howard Stern Radio Show |  | November 13, 1999 | 
| Hollywood Squares |  | February 7-11, 2000 | 
| Hollywood Squares |  | May 8-12, 2000 | 
| The Howard Stern Radio Show |  | November 4, 2000 | 
| Howard Stern |  | November 28, 2000 | 
| Hollywood Squares |  | February 5-9, 2001 | 
| Hollywood Squares |  | February 19-23, 2001 | 
| The Late Late Show with Craig Kilborn |  | October 8, 2001 | 
| Hollywood Squares |  | February 11-15, 2002 | 
| Hollywood Squares |  | February 25-March 1, 2002 | 
| Howard Stern |  | February 3, 2003 | 
| Primetime Glick | Mel Brooks / Jason Alexander | May 29, 2003 | 
| Pyramid |  | November 3-7, 2003 | 
| Real Time with Bill Maher | Episode 25 | February 13, 2004 | 
| Hollywood Squares |  | April 26-30, 2004 | 
| Pyramid |  | May 10-14, 2004 | 
| Real Time with Bill Maher | Episode 35 | September 3, 2004 | 
| The Ellen DeGeneres Show | Show 202 | October 25, 2004 | 
| The Late Late Show with Craig Kilborn |  | October 28, 2004 | 
| The Tony Danza Show | Show 53 | November 24, 2004 | 
| The Oprah Winfrey Show |  | November 29, 2004 | 
| The Late Late Show with Craig Ferguson | Show 4 | January 6, 2005 | 
| Real Time with Bill Maher | Episode 48 | March 18, 2005 | 
| The Ellen DeGeneres Show | Show 303 | April 26, 2005 | 
| Live with Regis and Kelly |  | May 30, 2005 | 
| The Tony Danza Show |  | July 15, 2005 | 
| The Tony Danza Show |  | July 27, 2005 | 
| Live with Regis and Kelly |  | November 23, 2005 | 
| Real Time with Bill Maher | Episode 72 | March 24, 2006 | 
| Real Time with Bill Maher | Episode 86 | October 20, 2006 | 
| TALKSHOW with Spike Feresten | Jason Alexander | November 4, 2006 | 
| Real Time with Bill Maher | Episode 95 | March 16, 2007 | 
| Thank God You're Here | Episode 105 | April 16, 2007 | 
| The Late Late Show with Craig Ferguson | Show 558 | September 13, 2007 | 
| Entertainment Tonight |  | December 31, 2007 | 
| Entertainment Tonight |  | March 6, 2008 | 
 Notable Film Roles
 Producer
 Series Produced
 Writer
 Series Created
 Episode Writer
 Director
 Episode Director
 Memorable Moments
 Awards and Accolades
 American Comedy Awards
-  Won: Funniest Supporting Male Performer in a TV Series (1992, 1993)
-  Seinfeld
-  Nominated: Funniest Supporting Male Performer in a TV Series (1996, 1999)
-  Seinfeld
 DGA Awards
-  Nominated: Outstanding Directorial Achievement in Comedy Series (1993)
-  Seinfeld
-  Nominated: Outstanding Supporting Actor in a Comedy Series (1992, 1993, 1994, 1995, 1996, 1997, 1998)
-  Seinfeld
-  Nominated: Outstanding Guest Actor in a Comedy Series (1994)
-  Dream On
-  Nominated: Best Performance by an Actor in a Supporting Role in a Series, Mini-Series or Motion Picture Made for TV (1993, 1994, 1995, 1998)
-  Seinfeld
 Satellite Awards
-  Nominated: Best Performance by an Actor in a Supporting Role in a Mini-Series or Motion Picture Made for Television (1998)
-  Cinderella
-  Won: Outstanding Performance by a Male Actor in a Comedy Series (1995)
-  Seinfeld
-  Nominated: Outstanding Performance by a Male Actor in a Comedy Series (1996, 1997, 1998, 1999)
-  Seinfeld
 Other Awards
-  DVD Exclusive Awards
-  Nominated: Best Animated Character Performance in a DVD Premiere Movie (2003) - 101 Dalmatians II: Patch's London Adventure
-  Nominated: Best Animated Character Performance (2003) - The Hunchback of Notre Dame II
-  Nominated: Best Original Song (2003) - The Hunchback of Notre Dame II
-  Nominated: Best Supporting Actor (2001) - Love and Action in Chicago
 
-  Saturn Award
-  Nominated: Best Supporting Actor (2001) - The Adventures of Rocky & Bullwinkle
 
-  Tony Award
-  Won: Best Actor in a Musical (1989)- Jerome Robbins' Broadway
 
-  Drama Desk Awards
-  Won: Outstanding Actor in a Musical (1989) - Jerome Robbins' Broadway
-  Nominated: Outstanding Featured Actor in a Musical (1986) - Personals
 
 Trivia