| 1977 Australian Open (January) | |
|---|---|
| Date | 3 – 9 January | 
| Edition | 65th | 
| Category | Grand Slam (ITF) | 
| Surface | Grass | 
| Location | Melbourne, Victoria, Australia | 
| Venue | Kooyong Lawn Tennis Club | 
| Champions | |
| Men's Singles | |
|  Roscoe Tanner | |
| Women's Singles | |
|  Kerry Melville Reid | |
| Men's Doubles | |
|  Arthur Ashe /  Tony Roche | |
| Women's Doubles | |
|  Dianne Fromholtz /  Helen Gourlay | |
The 1977 Australian Open (January) was a tennis tournament played on outdoor grass courts at the Kooyong Stadium in Melbourne, Australia. The tournament was held from 3 to 9 January 1977. Due to a scheduling change two Australian Opens took place in 1977 with the second taking place in December.
 Roscoe Tanner defeated
 Roscoe Tanner defeated  Guillermo Vilas, 6–3, 6–3, 6–3
 Guillermo Vilas, 6–3, 6–3, 6–3
 Kerry Melville Reid defeated
 Kerry Melville Reid defeated  Dianne Fromholtz, 7–5, 6–2
 Dianne Fromholtz, 7–5, 6–2