| 1985 Australian Open | |
|---|---|
| Date | 25 November – 8 December 1985 |
| Edition | 74th |
| Category | Grand Slam (ITF) |
| Surface | Grass |
| Location | Melbourne, Australia |
| Venue | Kooyong Lawn Tennis Club |
| Champions | |
| Men's singles | |
 Stefan Edberg | |
| Women's singles | |
 Martina Navratilova | |
| Men's doubles | |
Paul Annacone /  Christo van Rensburg | |
| Women's doubles | |
| Martina Navratilova / Pam Shriver | |
| Boys' singles | |
 Shane Barr | |
| Girls' singles | |
| Jenny Byrne | |
| Boys' doubles | |
| Brett Custer / David Macpherson | |
| Girls' doubles | |
| Jenny Byrne / Janine Thompson | |
The 1985 Australian Open was a tennis tournament played on grass courts at the Kooyong Lawn Tennis Club in Melbourne in Victoria in Australia. It was the 74th edition of the Australian Open and was held from 25 November through 8 December 1985; the last to be held at this time of year.
With the decision to hold the tournament in January in future, the next Australian Open would be the 1987 Open, held just over a year later.