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