| 1927 Australian Championships | |
|---|---|
| Date | 22 January – 31 January 1927 | 
| Edition | 20th | 
| Category | Grand Slam (ITF) | 
| Surface | Grass | 
| Location | Melbourne, Australia | 
| Venue | Kooyong Stadium | 
| Champions | |
| Men's singles | |
| Women's singles | |
| Men's doubles | |
| Women's doubles | |
| Mixed doubles | |
| Boys' singles | |
| Boys' doubles | |
The 1927 Australian Championships was a tennis tournament that took place on outdoor Grass courts at the Kooyong Stadium in Melbourne, Australia from 22 January to 1 February. It was the 20th edition of the Australian Championships (now known as the Australian Open), the 5th held in Melbourne, and the first Grand Slam tournament of the year. Australians Gerald Patterson and Esna Boyd won the singles titles.
Finals
Men's singles
 Gerald Patterson defeated 
 Jack Hawkes  3–6, 6–4, 3–6, 18–16, 6–3
Women's singles
 Esna Boyd defeated 
 Sylvia Lance Harper  5–7, 6–1, 6–2
Men's doubles
 Jack Hawkes / 
 Gerald Patterson defeated 
 Ian McInness / 
 Pat O'Hara Wood 8–6, 6–1, 6–2
Women's doubles
 Louie Bickerton / 
 Meryl O'Hara Wood defeated 
 Esna Boyd / 
 Sylvia Lance Harper 6–3, 6–3
Mixed doubles
 Esna Boyd / 
 Jack Hawkes defeated 
 Youtha Anthony / 
 Jim Willard 6–1, 6–3