Stephen Williams (born 6 May 1961) is a former Australian rules footballer, who played for the Port Adelaide in the SANFL and the Brisbane Bears in the AFL and was previously head coach of the Immanuel College first XVIII side.
Stephen Williams was originally listed with West Adelaide Football Club along with Mark and Anthony, where father Fos was coach, but Stephen did not play any senior games for West Adelaide.
However, Williams continued to be a fringe player up until (and including) 1986, playing a handful of games in the reserves each year.
Williams played 4 games for the Bears in 1987 (alongside brother Mark), and returned to the Port Adelaide in 1988.
When Coach John Cahill departed mid-season to prepare and lead Port Adelaide's entry into the AFL, Williams assumed the role of head coach for the SANFL team.