Glenn Howerton as Dennis Reynolds | Always Sunny on FXX
It's Always Sunny in Philadelphia
Glenn Howerton
Dennis / Executive Producer / Writer

Glenn Howerton plays "Dennis Reynolds" on It's Always Sunny in Philadelphia. He also serves as executive producer, director and writer for the critically acclaimed series.
Career Highlights
Get the inside scoop
Get the latest news and exclusives from FX including show premieres and more.
Please enter a valid email address