Year	Title	Role	Notes
2000	Madigan Men	Clerk	"Episode: ""Three Guys, a Girl and a Conversation Nook"""
2001	Law & Order	Jeremy	"Episode: ""Swept Away – A Very Special Episode"""
2001–2004	Third Watch	Michael Boscorelli	5 episodes
2003	Luis	Richie	10 episodes
2004	Reno 911!	Inbred Twin	"Episode: ""Not Without My Mustache"""
2005–present	It's Always Sunny in Philadelphia	Charlie Kelly	144 episodes, also executive producer and writer
2011	Saturday Night Live	Himself (host)	"Episode: ""Charlie Day/Maroon 5"""
2012	Unsupervised	Jesse Judge	"Voice Episode: ""Jesse Judge Lawncare Incorporated"""
2012	Saturday Night Live	Congressman Fenton Worthington Carrey	"Episode: ""Jamie Foxx/Ne-Yo"""
2012	American Dad!	Meth Head	"Voice Episode: ""Adventures in Hayleysitting"""
2014	Drunk History	Allan Pinkerton	"Episode: ""Baltimore"""
2018	The Cool Kids	Chet	1 episode, also co-creator, executive producer and writer
TBA	Mythic Quest	-	Producer and screenwriter