| 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 | |