Cheers character guide

Who is Cliff Clavin in Cheers?

The know-it-all Boston mail carrier who sits beside Norm at the Cheers bar, lives with his mother, and has a dubious fact ready for every conversation whether anyone asked or not.

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Cliff Clavin's Sitcomdle clue card

The five clues the game shows when Cliff Clavin is the answer or a guess.

Show
Cheers
Debut
1982
Network
NBC
Role
Main
Gender
Male

Cliff Clavin has not been a daily answer yet. Play today's Sitcomdle.

Show
Cheers
Played by
John Ratzenberger
First episode
“Give Me a Ring Sometime”Season 1, Episode 1, aired September 30, 1982
Role
Main cast
Network
NBC
Occupation
Mail carrier, U.S. Postal Service
Show run
1982 to 1993
Also known as
Clifford Clavin, Cliffie

Cliff Clavin is a proud employee of the U.S. Postal Service and the self-appointed expert on absolutely everything at Cheers. Played by John Ratzenberger, he is a lonely, boastful, oddly lovable barfly whose trivia is usually wrong and always delivered with total confidence.

On Cheers, Cliff Clavin's story runs through Norm Peterson (Best Friend), Carla Tortelli (Tormentor), Sam Malone (Bartender and friend), Woody Boyd (Bartender), and Frasier Crane (Fellow regular).

Cliff Clavin from Cheers: Sitcomdle character card

Who is Cliff Clavin?

Cliff is a Boston mail carrier who takes his job and his uniform very seriously. He spends his evenings on the stool next to his best friend, Norm, and he lives with his mother, Esther, well into adulthood. His father walked out when Cliff was a boy and resurfaces later as a con man on the run.

Cliff is desperate to be respected, and he tries to earn it by knowing things. He fills every pause with "facts" about history, science, and nature, most of them half-remembered or invented, and the rest of the bar has long since stopped listening.

Personality and comedy

Cliff's comedy comes from his unshakable confidence in information nobody can trust. He tells tall tales about his own adventures, brags about his romantic prospects, and corrects people who are right. Carla treats him as her personal punching bag, and his patience is matched only by his inability to take a hint.

Underneath, Cliff is lonely and a little sad, and the show lets that come through. His friendship with Norm is one of the warmest in the series, and the regulars, for all their teasing, always let him back onto his stool.

Key storylines

Cliff's most famous moment comes in season eight, when he appears on Jeopardy! and builds a huge lead with categories that seem written just for him. He then loses everything with a wildly wrong Final Jeopardy! response, one of the show's best-remembered gags.

Other storylines dig into his odd family life, including meeting his long-lost father and losing his childhood home. From season seven onward he has a gentle romance with fellow postal worker Margaret O'Keefe. In the final season she comes back to Boston pregnant, and Cliff stands by her and prepares to help raise the baby until she returns to the child's biological father.

Behind the scenes and legacy

Cliff was not in the original pilot script. John Ratzenberger auditioned for the small part that became Norm, lost it to George Wendt, and pitched the producers on a bar know-it-all instead. The character was first written as a security guard and became a mailman shortly before the pilot was filmed. Ratzenberger was a recurring player in season one and a main cast member from season two through the end.

Cliff later reappears on Frasier, most memorably in "Cheerful Goodbyes," a 2002 episode built around his retirement party in Boston.

Key Cliff Clavin episodes

  1. “The Barstoolie”Season 4, Episode 10Cliff reconnects with the father who abandoned him as a child.
  2. “The Last Angry Mailman”Season 6, Episode 7Cliff's childhood home is torn down.
  3. “What Is... Cliff Clavin?”Season 8, Episode 14Cliff dominates Jeopardy! until a disastrous Final Jeopardy! answer.
  4. “Heeeeere's...Cliffy!”Season 10, Episode 24Cliff is convinced a joke he sent in will air on The Tonight Show.
  5. “Do Not Forsake Me O' My Postman”Season 11, Episode 5Cliff's girlfriend Margaret returns to Boston pregnant, and Cliff has to decide where he stands.

Season and episode numbers follow the original broadcast order.

Cliff Clavin's catchphrase

  • “It's a little-known fact...”

More lines fans still quote: famous sitcom catchphrases and who said them.

Cliff Clavin: frequently asked questions

Who plays Cliff Clavin on Cheers?

John Ratzenberger plays Cliff. He was recurring in season one and a main cast member from season two through the final season in 1993.

What is Cliff Clavin's job?

Cliff is a mail carrier for the U.S. Postal Service in Boston, and he is very proud of it.

What happens when Cliff goes on Jeopardy!?

In "What Is... Cliff Clavin?" in season eight, Cliff builds a big lead and then loses it all with a wrong Final Jeopardy! answer.

Who is Cliff's mother?

Cliff lives with his mother, Esther Clavin, played by Frances Sternhagen.

Is Cliff Clavin in Frasier?

Yes. John Ratzenberger reprises Cliff on Frasier, including the 2002 episode "Cheerful Goodbyes," where Frasier travels to Boston for Cliff's retirement party.

Test yourself: Cliff Clavin quiz

5 questions about Cliff Clavin. Think of your answer, then open the reveal to check it.

  1. Question 1

    What is Cliff Clavin's job?

    1. Accountant
    2. Bartender
    3. Psychiatrist
    4. Mail carrier
    Show the answer

    Answer: D. Mail carrier

    Cliff delivers mail for the U.S. Postal Service and spends his off hours at the bar sharing dubious facts.

    See question 3 in the full quiz

  2. Question 2

    On which game show does Cliff lose all his winnings with a bizarre final answer?

    1. Wheel of Fortune
    2. The Price Is Right
    3. Jeopardy!
    4. Family Feud
    Show the answer

    Answer: C. Jeopardy!

    In "What Is... Cliff Clavin?" he builds up $22,000 in the first two rounds, then bets it all on Final Jeopardy and loses with an answer about people who have never been in his kitchen.

    See question 11 in the full quiz

  3. Question 3

    Who plays Cliff Clavin in Cheers?

    1. Chris Elliott
    2. Cheryl Hines
    3. John Ratzenberger
    4. Aubrey Plaza
    Show the answer

    Answer: C. John Ratzenberger

    John Ratzenberger plays Cliff Clavin.

  4. Question 4

    In what year did Cliff Clavin first appear on Cheers?

    1. 1984
    2. 1988
    3. 1986
    4. 1982
    Show the answer

    Answer: D. 1982

    Cliff Clavin debuted in 1982, in "Give Me a Ring Sometime" (Season 1, Episode 1). That year is the Debut clue in the game.

  5. Question 5

    Which episode was Cliff Clavin's first?

    1. "Gay Witch Hunt"
    2. "The Creepy Candy Coating Corollary"
    3. "Give Me a Ring Sometime"
    4. "My First Day"
    Show the answer

    Answer: C. "Give Me a Ring Sometime"

    Cliff Clavin first appeared in "Give Me a Ring Sometime," Season 1, Episode 1.

Take the full Cheers quiz (20 questions)

Sources and corrections

Reference pages used for this guide, including character, cast, and episode details.

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