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