Glenn Howerton
Glenn Franklin Howerton III (born April 13, 1976) is an American actor of television and film. He is best-known for his role as Dennis Reynolds on FX's It's Always Sunny in Philadelphia (on which he is also a writer and executive producer). He also played Corey Howard on the short-lived 2002 sitcom That '80s Show.
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Acting
TV
The Simpsons
as Peter Linz (voice)
1989
TV
Family Guy
as (voice)
1999
Movie
Crank
as Hospital Doctor
2006
Movie
Serenity
as Lilac Young Tough
2005
Movie
The Hunt
as Richard
2020
TV
Fargo
as Don Chumph
2014
Movie
Crank: High Voltage
as Doctor (uncredited)
2009
Movie
The Strangers
as Mike
2008
TV
American Dad!
as Animal Control Guy #1 (voice)
2005
TV
It's Always Sunny in Philadelphia
as Dennis Reynolds
2005
TV
ER
as Nick Cooper
1994
Movie
BlackBerry
as Jim
2023
Movie
Everything Must Go
as Gary
2011
Movie
Must Love Dogs
as Michael
2005
TV
The Cleveland Show
2009
TV
Velma
as Fred (voice)
2023
TV
Abbott Elementary
as Dennis
2021
TV
Conan
as Self
2010
TV
Jimmy Kimmel Live!
as Self
2003
TV
A.P. Bio
as Jack Griffin
2018
TV
The Mindy Project
as Cliff Gilbert
2012
TV
Sirens
as Ethan Corbin II
2025
TV
Welcome to Wrexham
as Self
2022
TV
The Late Late Show with James Corden
as Self - Guest
2015
Crew
TV
It's Always Sunny in Philadelphia
Writer
2005
TV
A.P. Bio
Co-Executive Producer
2018
Movie
All the Wilderness
Executive Producer
2014
TV
Unsupervised
Producer
2012
Movie
A Very Sunny Christmas
Executive Producer
2009
Movie
The Nightman Cometh: Live
Executive Producer
2009
Movie
The Send-Off
Producer
2022
TV
Boldly Going Nowhere
Producer
2008
TV
It's Always Sunny in Moscow
Creator
2014