The 1977 Australian Open (January) was a tennis tournament played on outdoor grass courts at the Kooyong Lawn Tennis Club in Melbourne, Australia.

[2] The tournament was held from 3 to 9 January 1977.

[2] Due to a scheduling change, two Australian Opens took place in 1977 with the second taking place in December.

Roscoe Tanner defeated Guillermo Vilas, 6–3, 6–3, 6–3 Kerry Melville Reid defeated Dianne Fromholtz, 7–5, 6–2 Arthur Ashe / Tony Roche defeated Charlie Pasarell / Erik van Dillen, 6–4, 6–4 Dianne Fromholtz / Helen Gourlay defeated Kerry Melville Reid / Betsy Nagelsen, 5–7, 6–1, 7–5 Brad Drewett[3] defeated Tim Wilkison, 6–4, 7–6[4] Pamela Baily[5] defeated Amanda Tobin, 6–2, 6–3[4]