1988 National Soccer League Grand Final

The 1988 National Soccer League Grand Final was the fourth National Soccer League Grand Final, the championship-deciding match of the Australian National Soccer League and the culmination of the 1988 season. The match was played between Sydney Croatia and Marconi Fairfield on 3 September 1988 at Parramatta Stadium in Sydney.

This was the first NSL Grand Final for both teams. Marconi Fairfield won 5–4 on penalties after a 2–2 draw and is the first club to win the national league championship from fourth place. It was also the first Australian National League Grand Final to feature two teams from the same city, with both teams representing Sydney.