It's Always Sunny in Philadelphia
Genre	Sitcom Black comedy
Created by	Rob McElhenney
Developed by	Rob McElhenney Glenn Howerton
Starring	Charlie Day Glenn Howerton Rob McElhenney Kaitlin Olson Danny DeVito
Opening theme	"Temptation Sensation" by Heinz Kiessling
Composer	Cormac Bluestone
Country of origin	United States
Original language	English
No. of seasons	16
No. of episodes	170 (list of episodes)
Production
Executive producers	Charlie Day Glenn Howerton Rob McElhenney Michael Rotenberg Nick Frenkel Scott Marder Rob Rosell David Hornsby Dan Attias John Fortenberry Matt Shakman Megan Ganz Dannah Phirman Danielle Schneider
Producers	Tom Lofaro Fred Savage Matt Shakman Randall Einhorn Dave Chernin John Chernin Hunter Covington Todd Biermann Conor Galvin
Production locations	Los Angeles, California Philadelphia, Pennsylvania
Cinematography	Peter Smokler John Tanzer
Editors	Josh Drisko Tim Roche Robert Bramwell Skip Collector
Camera setup	Single-camera
Running time	18–25 minutes
Production companies	3 Arts Entertainment RCG Productions FX Productions
Original release
Network	FX (2005–2012) FXX (2013–present)
Release	August 4, 2005 (2005-08-04) – present

It's Always Sunny in Philadelphia is an American sitcom that premiered on FX on August 4, 2005, and moved to FXX beginning with the ninth season.