John Ratzenberger
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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.
Known for
Credits
Toy Story 5 (2026)
as Hamm (voice)
Coco (2017)
as Juan Ortodoncia (voice)
Inside Out (2015)
as Fritz (voice)
Toy Story 2 (1999)
as Hamm (voice)
Swapped (2026)
as Elder Javan (voice)
Toy Story (1995)
as Hamm (voice)
Inside Out 2 (2024)
as Fritz (voice)
Ratatouille (2007)
as Mustafa (voice)
Monsters, Inc. (2001)
as Yeti (voice)
Finding Nemo (2003)
as Fish School (voice)
Up (2009)
as Construction Foreman Tom (voice)
WALL·E (2008)
as John (voice)
Toy Story 3 (2010)
as Hamm (voice)
Cars 2 (2011)
as Mack (voice)
The Incredibles (2004)
as Underminer (voice)
Toy Story 4 (2019)
as Hamm (voice)
The Empire Strikes Back (1980)
as Major Derlin
Monsters University (2013)
as Yeti (voice)
Brave (2012)
as Gordon (voice)
Incredibles 2 (2018)
as Underminer (voice)
Cars 3 (2017)
as Mack (voice)
Cars (2006)
as Mack / Hamm Truck / Abominable Snow Plow / P.T. Flea Car (voice)
Onward (2020)
as Construction Worker Fennwick (voice)
A Bug's Life (1998)
as P.T. Flea (voice)
The Good Dinosaur (2015)
as Earl (voice)
Luck (2022)
as Rootie (voice)
Superman (1978)
as 1st Controller
Finding Dory (2016)
as Husband Crab (Bill) (voice)
Superman II (1980)
as Controller
Planes (2013)
as Harland (voice)
Planes: Fire & Rescue (2014)
as Brodi (voice)
Spellbound (2024)
as Milo The Monster Handler (voice)
Something New (2006)
as Brian's Father (uncredited)
A Bridge Too Far (1977)
as U.S. Lieutenant
Gandhi (1982)
as American Lieutenant
Ray Gunn (2026)
as Board Member Howard Jaffe (voice)
Hawaiian Vacation (2011)
as Hamm (voice)
Outland (1981)
as Tarlow
Twilight's Last Gleaming (1977)
as Sgt. Kopecki
Firefox (1982)
as Chief Peck
Monkey Up (2016)
as Mr. Hartz
That Darn Cat (1997)
as Dusty
Geared-Up (2006)
Actor
Motel Hell (1980)
as Drummer
Yanks (1979)
as Cpl Cook
One Night Stand (1997)
as Phil
Battletruck (1982)
as Rusty
Valentino (1977)
as Newshound
Small Fry (2011)
as Hamm (voice)
Superman II: The Richard Donner Cut (2006)
as Controller #1
Partysaurus Rex (2012)
as Hamm (voice)
Reds (1981)
as Communist Leader (uncredited)
Tapawingo (2025)
as Tom Roan
Untitled Jack and the Beanstalk Film (—)
as (voice)
Ragtime (1981)
as Policeman
Disneyland's 35th Anniversary Celebration (1990)
as Cliff Clavin
Arabian Adventure (1979)
as Achmed
House II: The Second Story (1987)
as Bill
Your Friend the Rat (2007)
as P.T. Flea (voice) (uncredited)
Warlords of Atlantis (1978)
as Fenn
The Pixar Story (2007)
as Yeti (voice) (archive footage)
Super Buddies (2013)
as Marvin 'Gramps' Livingstone
Hanover Street (1979)
as Sgt. John Lucas
She's Having a Baby (1988)
as John Ratzenberger (uncredited)
The Falcon and the Snowman (1985)
as Detective
Under Pressure (1997)
as Al Calavito
Pup Star: Better 2Gether (2017)
as Salty (voice)
Pup Star: World Tour (2018)
as Grandpa Growl (voice)
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 6 (—)
as Hamm (voice)
Russell Madness (2015)
as Mick Vaughn
Must See TV: An All Star Tribute to James Burrows (2016)
as Self
What if... (2010)
as Mike the Angel
Project: Puppies for Christmas (2019)
as Daniel Nilwater
Mickey's 60th Birthday (1988)
as Cliff Clavin
The Ritz (1976)
as Patron
Matchmaker Santa (2012)
as George
Timestalkers (1987)
as General Joe Brodsky
Protocol (1984)
as Security Guard on TV
In The Name of God (2013)
as Reverend Thomas
Tick Tock (2000)
as Clay Fairfield, P.I.
In Search of Tomorrow (2022)
as Self - Interviewee
Disney's Magic in the Magic Kingdom (1988)
as Self
NBC 75th Anniversary Special (2002)
as Self
Change of Heart (2016)
as Dr. Charles Burke
How Murray Saved Christmas (2014)
as Officer Bender (voice)
Local Commercial (2012)
as Earl T. Barnum
The Art of 'Spirited Away' (2003)
as Self
Toy Story at 20: To Infinity and Beyond (2015)
as Self
The Bitch (1979)
as Hal Leonard
The Earth Day Special (1990)
as Cliff Clavin
The Santa Con (2014)
as Warden
Pup Star (2016)
as Mutt (voice)
The Story Behind 'Toy Story' (1996)
as Self
Camp Cucamonga (1990)
as Marvin Schector
Monty Python: Live at Aspen (1998)
as Audience Member (uncredited)
WWJD II: The Woodcarver (2012)
as Ernest Otto
Miracle in East Texas (2020)
as Dad Everett
Mystery Woman: Redemption (2006)
as Jim Carter
Going to the Chapel (1988)
as Walt Caruso
Likely Stories, Vol. 4 (1983)
as Jersey Cop #2
The Pennsylvania Miners' Story (2002)
as Thomas 'Tucker' Foy
Combat Academy (1986)
as Mr. Barnett
A Fare to Remember (1999)
as Mickey
Dog's Best Friend (1997)
as Goat (voice)
Fixing Pete (2012)
as Clayton
Determination of Death (2001)
as Charlie Halloran
A Christmas Mystery (2014)
as Logan Walker
Disney Through The Decades (2001)
Actor
Shifting Gears (2018)
as Conrad Baines
Our First Christmas (2008)
as Joe Noll
Tiny Toy Stories (1996)
as Hamm (voice)
Right of Way (1983)
as Policeman
The Frasier Story (1999)
as Self
Grace of God (2014)
as Reverend Thomas
The Village Barbershop (2008)
as Art Leroldi
The Good Soldier (1981)
as Jimmy
Titleist: Made in America (—)
Actor
Rating Notman (1982)
Actor