The 1979 WANFL Grand Final was an Australian rules football game contested between the East Fremantle and South Fremantle Football Clubs, held at Subiaco Oval on 22 September 1979. It was the 49th annual Grand Final of the Western Australian National Football League, staged to determine the premiers for the 1979 WANFL season. The match, attended by 52,781 spectators, the record crowd for a football match at Subiaco, was won by East Fremantle by a margin of 33 points, marking that club's 25th premiership victory.