Glenn Howerton

Acting • 1976-04-13 • Okinawa, Japan

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. Description above from the Wikipedia article Glenn Franklin Howerton, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Known For

7.4

Family Guy

1999

8.2

It's Always Sunny in Philadelphia

2005

8.3

Fargo

2014

7.8

ER

1994

5.9

The Cleveland Show

2009

6.3

The Mindy Project

2012

Fan Club

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Filmography

2025
SirensTV
Ethan Corbin II • 5 episodes
★ 6.6
2025
PaleyLive: It’s Always Sunny in Philadelphia 20th Anniversary Celebration!Film
Self
2024
Hot Ones VersusTV
Self • 1 episodes
★ 8.2
2023
BlackBerryFilm
Jim
★ 7.2
2023
VelmaTV
Fred (voice) • 21 episodes
★ 3.5
2023
Fool's ParadiseFilm
Business Manager
★ 4.7
2022
Welcome to WrexhamTV
Self • 1 episodes
★ 7.8
2022
The Thief CollectorFilm
Jerry Alter
★ 6.8
2021
Abbott ElementaryTV
Dennis • 1 episodes
★ 7.5
2021
How It EndsFilm
John
★ 4.9
2021
SnackedTV
Self • 1 episodes
★ 10.0
2020
The HuntFilm
Richard
★ 6.7
2020
ArchenemyFilm
The Manager
★ 5.2
2020
The FugitiveTV
Jerry Conwell • 5 episodes
★ 6.2
2020
Mr. Bungle: The Night They Came HomeFilm
Audience
★ 7.0
2019
The Kelly Clarkson ShowTV
Self • 2 episodes
★ 6.2
2019
Under A Rock with Tig NotaroTV
Self - Guest • 1 episodes
★ 6.8
2018
A.P. BioTV
Jack Griffin • 42 episodes
★ 6.9
2016
Officer DowneFilm
Dominic
★ 4.5
2016
When Pigs FlyFilm
Uncle Al
★ 4.5
2015
The Late Late Show with James CordenTV
Self - Guest • 1 episodes
★ 5.1
2014
Late Night with Seth MeyersTV
Self - Guest • 2 episodes
★ 5.1
2014
FargoTV
Don Chumph • 5 episodes
★ 8.3
2013
Coffee TownFilm
Will
★ 6.4
2012
The Mindy ProjectTV
Cliff Gilbert • 13 episodes
★ 6.3
2012
House of LiesTV
Seth Buckley • 4 episodes
★ 6.6
2012
UnsupervisedTV
Clint (voice) • 2 episodes
★ 6.6
2012
UnsupervisedTV
Clint / Dirt (voice) • 1 episodes
★ 6.6
2012
UnsupervisedTV
Dirt (voice) • 1 episodes
★ 6.6
2011
Everything Must GoFilm
Gary
★ 6.2
2011
Vietnam in HDTV
Don Devore • 6 episodes
★ 7.6
2011
A Tribute to Ryan DunnFilm
Self
★ 8.7
2010
ConanTV
Self • 1 episodes
★ 7.2
2009
Crank: High VoltageFilm
Doctor (uncredited)
★ 6.1
2009
The Cleveland ShowTV
★ 5.9
2009
Glenn Martin, DDSTV
★ 6.9
2009
The Nightman Cometh: LiveFilm
Dennis Reynolds
★ 9.4
2009
A Very Sunny ChristmasFilm
Dennis Reynolds
★ 8.0
2008
The StrangersFilm
Mike
★ 6.1
2008
Free RadioTV
Self • 1 episodes
2008
Boldly Going NowhereFilm
Lieutenant Xander Centari
2006
CrankFilm
Hospital Doctor
★ 6.7
2006
Two WeeksFilm
Matthew Bergman
★ 6.0
2005
American Dad!TV
Animal Control Guy #1 (voice) • 1 episodes
★ 7.0
2005
It's Always Sunny in PhiladelphiaTV
Dennis Reynolds • 183 episodes
★ 8.2
2005
SerenityFilm
Lilac Young Tough
★ 7.4
2005
Must Love DogsFilm
Michael
★ 5.9
2003
Jimmy Kimmel Live!TV
Self • 1 episodes
★ 5.3
2003
E.D.N.Y.Film
Paul Webster
★ 7.0
2002
That '80s ShowTV
Corey Howard • 13 episodes
★ 5.8
2002
Monday Night MayhemFilm
Dick Ebersol
★ 6.2
2001
The JobTV
Young Guy • 1 episodes
★ 6.8
1999
Family GuyTV
(voice) • 3 episodes
★ 7.4
1997
The ViewTV
Self • 1 episodes
★ 4.3
1994
ERTV
Nick Cooper • 6 episodes
★ 7.8
1989
The SimpsonsTV
Peter Linz (voice) • 1 episodes
★ 8.0