What is the name of Kenny McCormick's older brother?

Kenny McCormick's older brother is named Kevin McCormick. Kevin is the eldest child of Stuart and Carol McCormick, making him older than Kenny and Karen.

Kevin is a recurring but less prominent member of Kenny's family. Unlike Kenny, who is one of the show's four main children, Kevin usually appears in family scenes or episode-specific stories rather than driving the central plot.

The McCormick family is defined by poverty, parental dysfunction, and Kenny's bizarre cycle of death and resurrection. Kevin's presence reinforces that Kenny is not an only child: he has both an older brother and a younger sister.

A frequent mistake is selecting Craig Tucker or Clyde Donovan, who are South Park classmates rather than relatives. Jimbo Kern is also unrelated to Kenny; he is an adult townsperson and Stan Marsh's uncle.