Stephen Scott Kernahan (born 1 September 1963) is a former Australian rules footballer who played for the Carlton Football Club in the Australian Football League (AFL) and for the Glenelg Football Club in the South Australian National Football League (SANFL). He also played 16 State of Origin games for South Australia and gained selection as an All-Australian five times (1983, 1986, 1988, 1992 and 1994). He later served for six years as president of the Carlton Football Club.