Charles Peckham Day (born February 9, 1976) is an American actor, writer, and producer. He is best known for playing Charlie Kelly on the FX comedy It's Always Sunny in Philadelphia (2005–present), which he st… See more

While still in college, Day was active in the training programs at the Williamstown Theatre Festival every summer from 1997, where he was a contemporary of actors such as Jimmi Simpson, David Hornsby, Kathryn Hahn… See more

A skilled musician, Day can play the piano, trombone, guitar, and harmonica, and has written or improvised most of the songs featured on It's Always Sunny in Philadelphia. In 2014, he received an honorary d… See more