Eric Theodore Cartman, commonly referred to by just his surname Cartman is a fictional character in the adult animated sitcom South Park, created by Trey Parker and Matt Stone. He is voiced by Parker, and is one of the series' four main characters, alongside Stan Marsh, Kyle Broflovski, and Kenny McCormick. He first appeared with the name Kenny in the short film 𝘛𝘩𝘦 𝘚𝘱𝘪𝘳𝘪𝘵 𝘰𝘧 𝘊𝘩𝘳𝘪𝘴𝘵𝘮𝘢𝘴 (1992), and later appeared in the 1995 film of the same title before debuting in 𝘊𝘢𝘳𝘵𝘮𝘢𝘯 𝘎𝘦𝘵𝘴 𝘢𝘯 𝘈𝘯𝘢𝘭 𝘗𝘳𝘰𝘣𝘦, the first episode of the series, on August 13, 1997.

Cartman is widely considered to be the most popular South Park character, one of the most influential fictional characters of all time, and an American cultural icon. Parker and Stone have stated that he is their favorite character, and the one with whom they most identify. South Park has received both praise and criticism for Cartman's transgressive behavior.