Glenn Howerton
Born
April 13, 1976 (49 years old)
Known For
Acting
Place of Birth
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.

Sirens
Ethan Corbin II · (5 episodes)
2025

Hot Ones Versus
Self · (1 episode)
2024

Fool's Paradise
Business Manager
2023

BlackBerry
Jim Balsillie
2023

Velma
Fred (voice) · (21 episodes)
2023

Welcome to Wrexham
Self · (1 episode)
2022

The Thief Collector
Jerry Alter
2022

Abbott Elementary
Dennis · (1 episode)
2021

How It Ends
John
2021

Snacked
Self · (1 episode)
2021

Archenemy
The Manager
2020

Mr. Bungle: The Night They Came Home
Audience
2020

The Fugitive
Jerry Conwell · (5 episodes)
2020

The Hunt
Richard
2020

The Kelly Clarkson Show
Self · (2 episodes)
2019

Under A Rock with Tig Notaro
Self - Guest · (1 episode)
2019

A.P. Bio
Jack Griffin · (42 episodes)
2018

Officer Downe
Dominic
2016

When Pigs Fly
Uncle Al
2016

Fargo
Don Chumph · (5 episodes)
2014

Late Night with Seth Meyers
Self · (1 episode)
2014

Coffee Town
Will
2013

The Mindy Project
Cliff Gilbert · (13 episodes)
2012

Unsupervised
Clint (voice) · (2 episodes)
2012

Unsupervised
Dirt (voice) · (1 episode)
2012

Unsupervised
Clint / Dirt (voice) · (1 episode)
2012

A Tribute to Ryan Dunn
Self
2011

Vietnam in HD
Don Devore · (6 episodes)
2011

Everything Must Go
Gary
2011

Conan
Self · (1 episode)
2010

A Very Sunny Christmas
Dennis Reynolds
2009

The Cleveland Show
(20 episodes)
2009

The Nightman Cometh: Live
Dennis Reynolds
2009

Glenn Martin, DDS
(2 episodes)
2009

Crank: High Voltage
Doctor
2009

The Strangers
Mike
2008

Two Weeks
Matthew Bergman
2006

Crank
Doctor
2006

Serenity
Lilac Young Tough
2005

It's Always Sunny in Philadelphia
Dennis Reynolds · (177 episodes)
2005

Must Love Dogs
Michael
2005

American Dad!
Animal Control Guy #1 (voice) · (1 episode)
2005

Jimmy Kimmel Live!
Self · (1 episode)
2003
E.D.N.Y.
Paul Webster
2003

That '80s Show
Corey Howard · (13 episodes)
2002

Monday Night Mayhem
Dick Ebersol
2002

The Job
Young Guy · (1 episode)
2001

Family Guy
(voice) · (3 episodes)
1999

The View
Self · (1 episode)
1997

ER
Nick Cooper · (6 episodes)
1994