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