The fourth season of South Park, an American animated television series created by Trey Parker and Matt Stone, began airing on April 5, 2000. The fourth season concluded after airing 17 episodes on December 20, 2000.

South Park is an American animated sitcom created by Trey Parker and Matt Stone and developed by Brian Graden for Comedy Central. The series revolves around four boys—Stan Marsh, Kyle Broflovski, Eric Cartman, and Kenny McCormick—and their exploits in and around the titular Colorado town. South Park also features many recurring characters. The series became infamous for its profanity and dark, surreal humor that satirizes a large range of subject matter.