| 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.
  Adrian Quist defeated
  Adrian Quist defeated   John Bromwich 6–4, 3–6, 6–3, 2–6, 6–3
  John Bromwich 6–4, 3–6, 6–3, 2–6, 6–3
  Nancye Wynne Bolton defeated
  Nancye Wynne Bolton defeated   Marie Toomey  6–3, 6–1
  Marie Toomey  6–3, 6–1
  John Bromwich /
  John Bromwich /   Adrian Quist defeated
  Adrian Quist defeated   Colin Long /
  Colin Long /   Frank Sedgman 1–6, 3–6, 8–6, 6–3, 8–6 [1]
  Frank Sedgman 1–6, 3–6, 8–6, 6–3, 8–6 [1] 
  Thelma Coyne Long /
  Thelma Coyne Long /   Nancye Wynne Bolton defeated
  Nancye Wynne Bolton defeated   Mary Bevis /
  Mary Bevis /   Pat Jones 6–3, 6–3 [2]
  Pat Jones 6–3, 6–3 [2] 
  Nancye Wynne Bolton /
  Nancye Wynne Bolton /   Colin Long defeated
  Colin Long defeated   Thelma Coyne Long /
  Thelma Coyne Long /   Bill Sidwell 7–5, 4–6, 8–6 [3]
  Bill Sidwell 7–5, 4–6, 8–6 [3]