Coral Buttsworth defeated Marjorie Crawford 1-6 6-3 6-4 in the final to win the Women's Singles title at the 1931 Australian Championships.
See also:
| 1st round | Semifinals | Finals | ||||||||||||||||
| Coral Buttsworth | 6 | 6 | ||||||||||||||||
| Frances Hoddle-Wrigley | 1 | 2 | Coral Buttsworth | 0 | 6 | |||||||||||||
| Sylvia Harper | 6 | 6 | Sylvia Harper | 6 | 4 | |||||||||||||
| P. Meaney | 1 | 2 | Coral Buttsworth | 1 | 6 | 6 | ||||||||||||
| Marjorie Crawford | 6 | 4 | 6 | Marjorie Crawford | 6 | 3 | 4 | |||||||||||
| Joan Hartigan | 4 | 6 | 4 | Marjorie Crawford | 3 | 6 | 7 | |||||||||||
| Kathrine Le Mesurier | 6 | 6 | Kathrine Le Mesurier | 6 | 2 | 5 | ||||||||||||
| Louise Bickerton | 1 | 3 | ||||||||||||||||