1977 Marlboro South Australian Men's Tennis Classic

{{Use Australian English|date=August 2013}}

{{Use dmy dates|date=January 2024}}

{{TennisEventInfo|1977|Marlboro South Australian Men's Tennis Classic|

| date=10–16 January

| edition=77th

| category=Grand Prix circuit

| prize_money=$75,000

| draw=64S / 32D

| surface=Grass / outdoor

| location=Adelaide, Australia

| champs={{flagicon|USA}} Victor Amaya{{cite web|title=1977 Adelaide – Singles draw|url=https://www.atptour.com/en/scores/archive/adelaide/7308/1977/draws?matchtype=singles|publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|AUS}} Cliff Letcher / {{flagicon|USA}} Dick Stockton{{cite web|title=1977 Adelaide – Doubles draw|url=https://www.atptour.com/en/scores/archive/adelaide/7308/1977/draws?matchtype=doubles|publisher=Association of Tennis Professionals (ATP)}}

| before_year=1974

| before_name=South Australian Tennis Championships

| after_year=1979

| after_name=South Australian Open

| main_name=South Australian Championships

}}

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.{{cite news|title=Amaya Wins First Pro Tennis Final, Beating Brian Teacher at Adelaide|url=https://www.nytimes.com/1977/01/18/archives/amaya-wins-first-pro-tennis-final-beating-brian-teacher-at-adelaide.html|newspaper=The New York Times|date=18 January 1977}}{{cite news|title=Strong Amaya Beats Teacher in Tennis Finals|url=https://news.google.com/newspapers?id=QXc0AAAAIBAJ&sjid=Ko4EAAAAIBAJ&dq=amaya%20teacher%20tennis&pg=3066%2C2625461|newspaper=Sarasota Journal|date=17 January 1977}}