The 1983 South Australian National Football League season was the 104th, since 1877, of the South Australian National Football League (SANFL) Australian rules football competition. The season commenced on Saturday 2 April 1983, and concluded on Saturday 1 October 1983 with the SANFL Grand Final at Football Park with West Adelaide defeating Sturt by 34 points to claim their eighth premiership and first since 1961.