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