John P. Farley (born October 29, 1968) is an American actor and comedian.

Farley was born in Madison, Wisconsin, the son of Mary Anne, a homemaker, and Thomas Farley, who owned an oil company. He is the youngest brother of actors Chris Farley and Kevin Farley. He is married to actress Jennifer Herron and has two children. He majored in marketing in college and later studied at The Second City in Chicago.

Currently he and Kevin work together on projects and tour comedy clubs around the country. Farley has received many roles from Chris's former SNL alums, such as Adam Sandler, David Spade, and Rob Schneider. His notable film work includes The Waterboy and The Benchwarmers. (He was the swimmer boy in love with one of the coaches in the latter.)

John is the youngest brother of Chris Farley. He grew up in Madison, Wisconsin. His older brother, Kevin, also acts. Tom, the eldest of the boys, works in Madison as the head of the Chris Farley Foundation. His sister, Barb, is a pre-school teacher in Madison. John attended Portsmouth Abbey School in Portsmouth, Rhode Island and Regis University in Denver, Colorado, where he majored in Marketing. He studied and worked at the Second City in Chicago after college. He moved to LA in 1998.