Jason Alexander

ActorWriterProductionDirectorProducer Sep 23 (age 66) Newark, New Jersey, USA 1975–2026 (51 year career)

6.3 avg rating

Biography

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 M…

Known For

Film

Hachi: A Dog's Tale

Carl

Film

Criminal Minds

Director

Film

Pretty Woman

Philip Stuckey

Film

Seinfeld

George Costanza

Film

The Hunchback of Notre Dame

Gargoyle Hugo (voice)

Film

Everybody Hates Chris

Director

Film

Jacob's Ladder

Geary

Film

Leo

Jayda's Dad (voice)

Filmography

Acting (207)

Movies (103)

Jimmy

2026 Upcoming

as Louis B. Mayer

Nov 20

The Electric State

2025

as Ted / Wingman

6.5

The Gettysburg Address

2025

as Noah Brooks (voice)

Stealing Pulp Fiction

2025

as Dr. Mendelbaum

4.0

Paddy Chayefsky: Collector of Words

2025

as Self

Leo

2023

as Jayda's Dad (voice)

7.4

Dick Van Dyke: 98 Years of Magic

2023

as Self - Performer

7.8

Killing Me Softly with His Songs

as Self

Out of Office

Cinderella: The Reunion, A Special Edition of 20/20

2022

as Self

8.0

Dunston Checks Out

2022

as Jason Alexander (archival footage)

The Conspiracy

2022

Broadway: Beyond the Golden Age

2021

as Self

My Boyfriend's Meds

as Dr. Sternbach

Faith Based

as Nicky Steele

The Rocky Horror Musical Live Stream

2020

as Narrator

4.8

Bucky and the Squirrels

2018

as Jason Alexander

The Portuguese Kid

2018

as Barry Dragonetti

2.0

The Truth Is in the Stars

2017

as Self

7.1

Broadway: The Next Generation

2017

as Self

The Mark Lembeck Technique

2016

as Mark Lembeck

There's Something About Romcoms

2016

as Self

6.0

Tom and Jerry: Back to Oz

2016

as Mr. Bibb / The Nome King (voice)

6.0

For the Love of Spock

2016

as Self

7.4

Best Worst Thing That Ever Could Have Happened...

as Self

The Last Laugh

as Self

Wild Card

as Pinky

Larry Gaye: Renegade Male Flight Attendant

as Larry's Dad

Misery Loves Comedy

as Self

China, Il The Musical

2015

as Harold

Lucky Stiff

2014

as Vinnie Di Ruzzio

4.4

How Murray Saved Christmas

2014

as Doc Holiday (voice)

5.9

Stars in Shorts

2012

as Sid Rosenthal

6.0

National Lampoon's Another Dirty Movie

as Self (uncredited)

Say It Ain't Solo

as Self

A Fairly Odd Movie: Grow Up, Timmy Turner!

2011

as Cosmo

4.8

Dora the Explorer: Dora's Enchanted Forest Adventures

2011

as Owl (voice)

10.0

The Voyages of Young Doctor Dolittle

2011

as Eugene (voice)

Rock Slyde

2010

as Mailman Stan

5.4

Quantum Quest: A Cassini Space Odyssey

as Moronic (voice)

Not Your Time

as Sid Rosenthal

Hachi: A Dog's Tale

as Carl

The Grand

as Dr. Yakov Achmed

Jerry Seinfeld: Submarine Captain

2007

as Self

6.5

Farce of the Penguins

2006

as Penguin on Belly (voz)

4.1

Comedy Central Roast of William Shatner

2006

as Self - Roastmaster

6.5

Snoop Dogg's Hood of Horror

2006

as British Record Mogul

4.8

Ira & Abby

2006

as Dr. Morris Saperstein

5.5

How to Go Out on a Date in Queens

as Johnny

The Aristocrats

as Self

Earth to America

as self

Kramer vs. Kramer: Kenny to Cosmo

2004

as Self

Seinfeld: How It Began

2004

as Self/George Costanza

7.8

A Christmas Carol

2004

as Jacob Marley / Marley's Ghost

6.4

The Seinfeld Story

2004

as Self

7.5

101 Dalmatians II: Patch's London Adventure

2003

as Lightning (voice)

6.0

The Very Best of America's Funniest Comedians

2003

as Self (archive footage)

The Hunchback of Notre Dame II

2002

as Gargoyle Hugo (voice)

5.4

The Man Who Saved Christmas

as A.C. Gilbert

Shallow Hal

as Mauricio Wilson

The Trumpet of the Swan

2001

as Father (voice)

5.6

Bravo Profiles: Penn and Teller

2001

as Self

On Edge

as Zamboni Phil

Being 'Shallow Hal'

as Self

The Adventures of Rocky & Bullwinkle

2000

as Boris

4.3

Let's Rap Fire Safety

2000

6.5

Madeline: Lost in Paris

1999

as Uncle Horst / Henri (voice)

6.8

Jingle Bells

1999

as Elf (Voice)

6.0

Larry David: Curb Your Enthusiasm

1999

as Self

7.5

Sideshow: Alive on the Inside

1999

as Narrator

The N.Y. Friars Club Roast of Jerry Stiller

1999

as Self - Roastmaster

5.3

Love and Action in Chicago

1999

as Frank Bonner

4.7

Ultimate Trek: Star Trek's Greatest Moments

as Host

Denial

as Art Witz

Titey

as Titey (voice)

Cinderella

1997

as Lionel

6.5

Love! Valour! Compassion!

1997

as Buzz Hauser

6.1

The Hunchback of Notre Dame

1996

as Gargoyle Hugo (voice)

7.1

Dunston Checks In

1996

as Robert Grant

5.4

Sex, Censorship and the Silver Screen

as Quote Reader

The Last Supper

as Anti-Enviroment

Bye Bye Birdie

as Albert J. Peterson

6.1

For Better or Worse

1995

as Michael Makeshift

4.0

A Tribute to Stephen Sondheim

Blankman

as Mr. Stone

The Paper

as Marion Sandusky

Down on the Waterfront

North

as North's Dad

The Return of Jafar

as Abis Mal - the Chief of the Thieves (voice)

Coneheads

as Larry Farber

Sexual Healing

as Frank

For Goodness Sake

1993

as Electronics Store Customer

10.0

I Don't Buy Kisses Anymore

as Bernie Fishbine

Pretty Woman

as Philip Stuckey

Jacob's Ladder

as Geary

White Palace

as Neil

Brighton Beach Memoirs

as Pool Player #1

The Mosquito Coast

as Hardware Clerk

Rockabye

as Lt. Ernest Foy

The Burning

as Dave

Senior Trip

as Pete

Leo 2

The Sisters Rosensweig

as Mervyn

Television (104)

The Bad Guys: The Series

2025

as Mysterious Figure (voice)

6.5

LEGO Marvel Avengers: Strange Tails

as Magneto (voice)

Y llegaron de noche

as Carl Laemmle

History of the World: Part II

2023

as Maurice Cheeks

5.6

Rock, Paper, Scissors

2023

as Jonathan Fartjoke (voice)

7.4

Star Trek: Prodigy

2021

as Doctor Noum (voice)

7.3

The Problem with Jon Stewart

2021

as Jeff Bezos

7.2

Celebrity Wheel of Fortune

2021

as Self - Contestant

7.0

History of the Sitcom

2021

as Self - Actor

6.9

Stars in the House

2020

as Self

Harley Quinn

2019

as Sy Borgman (voice)

8.3

The Movies That Made Us

as Self

Mad About You

as Jason Alexander

The Conners

as Pastor Phil

Young Sheldon

as Gene Lundy

The Orville

as Olix

The Marvelous Mrs. Maisel

2017

as Asher Friedman

8.0

Kody Kapow

2017

as Goji (voice)

Hit the Road

2017

as Ken Swallow

7.2

Dinner with Dad

2017

as Jason Alexander

The $100,000 Pyramid

as Self

To Tell the Truth

as Self - Panelist

Match Game

as Self - Panelist

The Late Late Show with James Corden

as Self

The Grinder

as Cliff Bemis

Big Time in Hollywood, Fl

2015

as Jason Alexander

7.1

Late Night with Seth Meyers

2014

as Self - Guest

5.2

The Tom and Jerry Show

2014

as Rick (voice)

7.3

Penn Zero: Part-Time Hero

2014

as Coach Wallace (voice)

TripTank

as Doctor (voice)

Drunk History

as William Tweed

Hollywood Game Night

as Self

Kirstie

as Stanford Temple

Comedy Bang! Bang!

as Inspector Gantlet

Comedians in Cars Getting Coffee

as Self

Franklin & Bash

as Carter Lang

Talking Dead

as Self

Harry's Law

as Richard Cross

China, IL

as Harold (voice)

Fish Hooks

as Mr. Nibbles (voice)

The Marriage Ref

as Self - Panelist

Community

as Mountain Man

The Cleveland Show

Meteor

as Dr. Chetwyn

Shatner's Raw Nerve

as Self

Step It Up and Dance

Thank God You're Here

2007

as Self

The New Adventures of Old Christine

2006

as Dr. Palmer

7.1

Talkshow with Spike Feresten

Rachael Ray

as Self - Guest

Where My Dogs At?

American Dad!

as Sal (voice)

Criminal Minds

as Prof. Rothchild

The Late Late Show with Craig Ferguson

as Self

Robot Chicken

as Krampus (voice)

Everybody Hates Chris

as Principal Edwards

The Tony Danza Show

as Self - Guest

Listen Up!

as Tony Kleinman

Real Time with Bill Maher

as Self

Two and a Half Men

as Dr. Goodman

Jimmy Kimmel Live!

as Self

The Ellen DeGeneres Show

as Self

Monk

as Marty Eels

The Twilight Zone

as Patient

Good Day Live

as Self

The Legend of Tarzan

as Zutho (voice)

Critics Choice Awards

as Self

Primetime Glick

Bob Patterson

as Bob Patterson

Curb Your Enthusiasm

as Jason Alexander

Malcolm in the Middle

as Leonard

Son of the Beach

The Huntress

Dilbert

as Catbert (voice)

The Late Late Show with Craig Kilborn

as Self - Guest

Hollywood Squares

as Self - Panelist

Hercules

as Poseidon (voice)

Remember WENN

as Alan Ballinger

Muppets Tonight

as Self

Star Trek: Voyager

as Kurros

Friends

as Earl

Duckman

as Duckman (voice)

Aladdin

as Abis Mal (voice)

The Nanny

as Jack

The Larry Sanders Show

1992

as Jason Alexander

7.7

Dinosaurs

1991

as The Job Wizard (voice)

Dream On

as Randall Townsend

The Simpsons

as Bourbon Verlander (voice)

8.0

Seinfeld

1989

as George Costanza

8.3

LIVE with Kelly and Mark

as Self - Guest

Favorite Son

as Chris Van Allen

Everything's Relative

as Julian Beeby

Jeopardy!

as Self

E/R

Reading Rainbow

as Self - Narrator (voice)

8.4

Late Night with David Letterman

as Self

Newhart

A Capitol Fourth

as Self

Saturday Night Live

1975

as Self - Host

7.0

People's Choice Awards

as Self - Host

Tony Awards

as Self - Presenter

The Emmy Awards

as Self

Golden Globe Awards

as Self - Nominee

Saturday TV Funhouse

as Titey (voice)

10.0

Crew (16)

Movies (5)

The Mark Lembeck Technique

2016

Consulting Producer

Agent Cody Banks 2: Destination London

Executive Producer

Agent Cody Banks

Executive Producer

Just Looking

Director

For Better or Worse

Director

Television (11)

Dinner with Dad

2017

Writer

Mike & Molly

Director

Campus Ladies

Director

Criminal Minds

Director

Everybody Hates Chris

Director

Bob Patterson

Creator

Bob Patterson

Executive Producer

Bob Patterson

Story

Bob Patterson

Teleplay

Remember WENN

Director

Seinfeld

Director