
John Ratzenberger
- Known for
- Acting
- Born
- April 6, 1947
- Birthplace
- Bridgeport, Connecticut, USA
John Dezso Ratzenberger is an American actor, voice actor, director, producer, writer and entrepreneur. He is one of the most successful actors of all time in terms of box-office receipts. Ratzenberger is best known for portraying Cliff Clavin on the popular comedy series Cheers, for which he earned two Primetime Emmy nominations. He is also known being a voice actor appearing in almost every Pixar Animation Studios feature film, including Hamm in the Toy Story franchise, The Underminer in The Incredibles franchise, and Mack in the Cars franchise. Ratzenberger began his entertainment career while living in London in the 1970s. He had minor film and television roles throughout the late 70s and early 1980s before creating, and then landing, the role of the know-it-all mailman Cliff Clavin on Cheers, a role he portrayed throughout the show's eleven seasons. His first Pixar role was the voice of Hamm in Toy Story, and he has voiced Pixar characters in films and video games ever since. From 2004 to 2008 he hosted the TV documentary series Made in America. Outside of acting, he has promoted American entrepreneurship and manufacturing, and campaigned for several Republican candidates.
Filmography
- Untitled Jack and the Beanstalk Film
Untitled Jack and the Beanstalk Film TBA
as (voice)
- Titleist: Made in America
Titleist: Made in America TBA
Actor

Ray Gunn 2026
as Board Member Howard Jaffe (voice)

Toy Story 5 2026
as Hamm (voice)

Swapped 2026
as Elder Javan (voice)

Tapawingo 2025
as Tom Roan

Spellbound 2024
as Milo The Monster Handler (voice)

Inside Out 2 2024
as Fritz (voice)

Luck 2022
as Rootie (voice)

In Search of Tomorrow 2022
as Self - Interviewee

Onward 2020
as Construction Worker Fennwick (voice)

Miracle in East Texas 2020
as Dad Everett

Forky Asks a Question: What Is a Friend? 2019
as Hamm (voice)

Forky Asks a Question: What Is Money? 2019
as Hamm (voice)

Toy Story 4 2019
as Hamm (voice)

Project: Puppies for Christmas 2019
as Daniel Nilwater

Incredibles 2 2018
as Underminer (voice)

Pup Star: World Tour 2018
as Grandpa Growl (voice)

Shifting Gears 2018
as Conrad Baines

Coco 2017
as Juan Ortodoncia (voice)

Pup Star: Better 2Gether 2017
as Salty (voice)

Cars 3 2017
as Mack (voice)

Pup Star 2016
as Mutt (voice)

Finding Dory 2016
as Husband Crab (Bill) (voice)

Change of Heart 2016
as Dr. Charles Burke

Must See TV: An All Star Tribute to James Burrows 2016
as Self

Monkey Up 2016
as Mr. Hartz

Toy Story at 20: To Infinity and Beyond 2015
as Self

The Good Dinosaur 2015
as Earl (voice)

Inside Out 2015
as Fritz (voice)

Russell Madness 2015
as Mick Vaughn

The Santa Con 2014
as Warden

How Murray Saved Christmas 2014
as Officer Bender (voice)

A Christmas Mystery 2014
as Logan Walker

Planes: Fire & Rescue 2014
as Brodi (voice)

Grace of God 2014
as Reverend Thomas

In The Name of God 2013
as Reverend Thomas

Planes 2013
as Harland (voice)

Super Buddies 2013
as Marvin 'Gramps' Livingstone

Monsters University 2013
as Yeti (voice)

Matchmaker Santa 2012
as George

Partysaurus Rex 2012
as Hamm (voice)

Brave 2012
as Gordon (voice)

WWJD II: The Woodcarver 2012
as Ernest Otto

Fixing Pete 2012
as Clayton

Local Commercial 2012
as Earl T. Barnum

Small Fry 2011
as Hamm (voice)

Hawaiian Vacation 2011
as Hamm (voice)

Cars 2 2011
as Mack (voice)

What if... 2010
as Mike the Angel

Toy Story 3 2010
as Hamm (voice)

Up 2009
as Construction Foreman Tom (voice)

Our First Christmas 2008
as Joe Noll

WALL·E 2008
as John (voice)

The Village Barbershop 2008
as Art Leroldi

Your Friend the Rat 2007
as P.T. Flea (voice) (uncredited)

The Pixar Story 2007
as Yeti (voice) (archive footage)

Ratatouille 2007
as Mustafa (voice)

Geared-Up 2006
Actor

Mystery Woman: Redemption 2006
as Jim Carter

Superman II: The Richard Donner Cut 2006
as Controller #1

Cars 2006
as Mack / Hamm Truck / Abominable Snow Plow / P.T. Flea Car (voice)

Something New 2006
as Brian's Father (uncredited)

The Incredibles 2004
as Underminer (voice)

Finding Nemo 2003
as Fish School (voice)

The Art of 'Spirited Away' 2003
as Self

NBC 75th Anniversary Special 2002
as Self

The Pennsylvania Miners' Story 2002
as Thomas 'Tucker' Foy

Monsters, Inc. 2001
as Yeti (voice)

Determination of Death 2001
as Charlie Halloran

Disney Through The Decades 2001
Actor

Tick Tock 2000
as Clay Fairfield, P.I.

Toy Story 2 1999
as Hamm (voice)

A Fare to Remember 1999
as Mickey

The Frasier Story 1999
as Self

A Bug's Life 1998
as P.T. Flea (voice)

Monty Python: Live at Aspen 1998
as Audience Member (uncredited)

One Night Stand 1997
as Phil

Under Pressure 1997
as Al Calavito

Dog's Best Friend 1997
as Goat (voice)

That Darn Cat 1997
as Dusty

The Story Behind 'Toy Story' 1996
as Self

Tiny Toy Stories 1996
as Hamm (voice)

Toy Story 1995
as Hamm (voice)

Camp Cucamonga 1990
as Marvin Schector

Disneyland's 35th Anniversary Celebration 1990
as Cliff Clavin

The Earth Day Special 1990
as Cliff Clavin

Mickey's 60th Birthday 1988
as Cliff Clavin

Going to the Chapel 1988
as Walt Caruso

Disney's Magic in the Magic Kingdom 1988
as Self

She's Having a Baby 1988
as John Ratzenberger (uncredited)

House II: The Second Story 1987
as Bill

Timestalkers 1987
as General Joe Brodsky

Combat Academy 1986
as Mr. Barnett

The Falcon and the Snowman 1985
as Detective

Protocol 1984
as Security Guard on TV

Right of Way 1983
as Policeman

Likely Stories, Vol. 4 1983
as Jersey Cop #2

Gandhi 1982
as American Lieutenant

Firefox 1982
as Chief Peck
- Rating Notman
Rating Notman 1982
Actor

Battletruck 1982
as Rusty

Reds 1981
as Communist Leader (uncredited)

Ragtime 1981
as Policeman

Outland 1981
as Tarlow

The Good Soldier 1981
as Jimmy

Superman II 1980
as Controller

Motel Hell 1980
as Drummer

The Empire Strikes Back 1980
as Major Derlin

The Bitch 1979
as Hal Leonard

Yanks 1979
as Cpl Cook

Arabian Adventure 1979
as Achmed

Hanover Street 1979
as Sgt. John Lucas

Superman 1978
as 1st Controller

Warlords of Atlantis 1978
as Fenn

Valentino 1977
as Newshound

A Bridge Too Far 1977
as U.S. Lieutenant

Twilight's Last Gleaming 1977
as Sgt. Kopecki

The Ritz 1976
as Patron
Credits from TMDB.