1975 Australian Open – Women's singles

Defending champion Evonne Goolagong defeated Martina Navratilova in the final, 6–3, 6–2 to win the women's singles tennis title at the 1975 Australian Open. It was her fourth major singles title.

Seeds
• # 🇦🇺 Margaret Court (quarterfinals)

• # Olga Morozova (quarterfinals)

• # 🇦🇺 Evonne Goolagong (champion)

• # 🇦🇺 Kerry Melville (second round)

• # 🇦🇺 Helen Gourlay (second round)

• # 🇯🇵 Kazuko Sawamatsu (quarterfinals)

• # 🇦🇺 Dianne Fromholtz (third round)

• # Martina Navratilova (final)

Key

 * Q = Qualifier
 * WC = Wild card
 * LL = Lucky loser
 * r = Retired