| 1948 Australian Championships | |
|---|---|
| Date | 16–26 January 1948 |
| Edition | 36th |
| Category | Grand Slam (ITF) |
| Surface | Grass |
| Location | Melbourne, Australia |
| Venue | Kooyong Stadium |
| Champions | |
| Men's singles | |
 Adrian Quist | |
| Women's singles | |
| Nancye Wynne Bolton | |
| Men's doubles | |
| John Bromwich / Adrian Quist | |
| Women's doubles | |
| Thelma Coyne Long / Nancye Wynne Bolton | |
| Mixed doubles | |
| Nancye Wynne Bolton / Colin Long | |
The 1948 Australian Championships was a tennis tournament that took place on outdoor Grass courts at the Kooyong Stadium in Melbourne, Australia from 16 January to 26 January. It was the 36th edition of the Australian Championships (now known as the Australian Open), the 10th held in Melbourne, and the first Grand Slam tournament of the year. Australians Adrian Quist and Nancye Wynne Bolton won the singles titles.