What is Kenny's last name on "South Park"?

Kenny's last name on "South Park" is McCormick. His full name is Kenneth McCormick, although nearly everyone calls him Kenny.

Kenny is one of the show's four central children, alongside Stan Marsh, Kyle Broflovski, and Eric Cartman. He lives with his impoverished family in South Park, Colorado. His parents are Stuart and Carol McCormick, and he has siblings including Kevin and Karen.

The character is especially recognizable because his orange parka hood covers most of his face and muffles his speech. In the show's early seasons, Kenny was repeatedly killed in bizarre accidents, prompting Stan's famous line, "Oh my God, they killed Kenny!" He would typically return in the next episode without explanation.

A common mix-up is confusing his everyday name with his superhero identity, Mysterion. Mysterion is also Kenny, but McCormick is the family surname and the canonical answer to this question.