Glenn Howerton
Acting • AGE 50
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 i...
Acting
Sirens
Ethan Corbin II
2025
Hot Ones Versus
Self
2024
Fool's Paradise
Business Manager
2023
BlackBerry
Jim
2023
Velma
Fred (voice)
2023
Welcome to Wrexham
Self
2022
The Send-Off
Producer
2022
The Thief Collector
Jerry Alter
2022
Abbott Elementary
Dennis
2021
How It Ends
John
2021
Snacked
Self
2021
Archenemy
The Manager
2020
Mr. Bungle: The Night They Came Home
Audience
2020
The Fugitive
Jerry Conwell
2020
The Hunt
Richard
2020
The Kelly Clarkson Show
Self
2019
Under A Rock with Tig Notaro
Self - Guest
2019
A.P. Bio
Jack Griffin
2018
Officer Downe
Dominic
2016
When Pigs Fly
Uncle Al
2016
The Late Late Show with James Corden
Self - Guest
2015
It's Always Sunny in Moscow
Creator
2014
Fargo
Don Chumph
2014
All the Wilderness
Executive Producer
2014
Late Night with Seth Meyers
Self - Guest
2014
Coffee Town
Will
2013
The Mindy Project
Cliff Gilbert
2012
Unsupervised
Clint (voice)
2012
A Tribute to Ryan Dunn
Self
2011
Vietnam in HD
Don Devore
2011
Everything Must Go
Gary
2011
Conan
Self
2010
A Very Sunny Christmas
Dennis Reynolds
2009
The Cleveland Show
2009
The Nightman Cometh: Live
Dennis Reynolds
2009
Glenn Martin, DDS
2009
Crank: High Voltage
Doctor (uncredited)
2009
Boldly Going Nowhere
Writer
2008
The Strangers
Mike
2008
Free Radio
Self
2008
Two Weeks
Matthew Bergman
2006
Crank
Hospital Doctor
2006
Serenity
Lilac Young Tough
2005
It's Always Sunny in Philadelphia
Dennis Reynolds
2005
Must Love Dogs
Michael
2005
American Dad!
Animal Control Guy #1 (voice)
2005
Jimmy Kimmel Live!
Self
2003
That '80s Show
Corey Howard
2002
Monday Night Mayhem
Dick Ebersol
2002
The Job
Young Guy
2001
Family Guy
(voice)
1999
The View
Self
1997
ER
Nick Cooper
1994
The Simpsons
Peter Linz (voice)
1989