The 1977 Marlboro South Australian Men's Tennis Classic was a men's tennis tournament played on outdoor grass courts in Adelaide, Australia.

The event was part of the 1977 Grand Prix circuit and categorized as a two–star event.

It was the 77th edition of the tournament and was held from 10 January through 16 January 1977.

The singles title and $13,500 prize money was won by Victor Amaya.

[3][4] Victor Amaya defeated Brian Teacher 6–1, 6–4 Cliff Letcher / Dick Stockton defeated Syd Ball / Kim Warwick 6–3, 4–6, 6–4