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Rob McElhenney

Robert McElhenney III (born April 14, 1977), also known professionally as Rob Mac, is an American actor, screenwriter, producer, director, and businessman. He is best known for his role as Mac on the FX/FXX comedy series It's Always Sunny in Philadelphia (2005–present), a show he created and co-developed with Charlie Day and Glenn Howerton and on which he continues to serve as an executive producer and writer. He is also known for playing Ian Grimm on the Apple TV+ comedy series Mythic Quest (2020–2025), which he co-created with Day and Megan Ganz as executive producers.

Also recorded as Robert McElhenney III · Rob Mac

Rob McElhenney

Rob McElhenney at the 2010 Comic Con in San Diego

Gage Skidmore · CC BY-SA 3.0

Birth Name
Robert McElhenney III
Born
14 April 1977
Birthplace
Philadelphia, Pennsylvania, U.S.
Occupation
* Actor
Education
Temple University (dropped out)
Nationality
United States
Known for
It's Always Sunny in Philadelphia · Mythic Quest

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Robert McElhenney III (born April 14, 1977), also known professionally as Rob Mac, is an American actor, screenwriter, producer, director, and businessman. He is best known for his role as Mac on the FX/FXX comedy series It's Always Sunny in Philadelphia (2005–present), a show he created and co-developed with Charlie Day and Glenn Howerton and on which he continues to serve as an executive producer and writer. He is also known for playing Ian Grimm on the Apple TV+ comedy series Mythic Quest (2020–2025), which he co-created with Day and Megan Ganz as executive producers.

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wikidata · Q935989 · wikipedia · Rob McElhenney

In this article

  1. 01Biography
  2. 02Visual art and other activities
  3. 03Reception, influence and legacy
  4. 04Notes, references and evidence

The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.

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