1977 Australian Open (December) – Women's Singles

First-seeded Evonne Goolagong defeated Helen Gourlay, 6–3, 6–0, in the final to win the December edition Women's Singles tennis title at the 1977 Australian Open. Both players were entered in the championships as Mrs R. Cawley, as they were married to Roger Cawley and Richard Cawley (who were not related) respectively. The umpire became confused during the early stages of the final and simply referred to the players as Evonne or Helen to avoid confusion.[1]

Women's Singles
1977 Australian Open (December)
Champion	Evonne Goolagong
Runner-up	Helen Gourlay
Final score	6–3, 6–0
Draw	32 (4 Q )
Seeds	8

The second of the two Australian Opens held in 1977 started on 19 December and ended on 31 December. It was held in Kooyong in Melbourne and was a grass court tournament. For the first Australian Open held in 1977, see: 1977 Australian Open (January).

Kerry Reid was the defending champion, but was eliminated in the semifinals by Goolagong. This was the last ladies final contested by two Australians.