Abortion in Australia is a subject of state law

Australian court hierarchy

There are two streams within the hierarchy of Australian courts, the federal stream and the state and territory stream. While the federal courts and the court systems in each state and territory are separate, the High Court of Australia remains the ultimate court of appeal for the Australian...

 rather than national law. The grounds on which abortion

Abortion

Abortion is defined as the termination of pregnancy by the removal or expulsion from the uterus of a fetus or embryo prior to viability. An abortion can occur spontaneously, in which case it is usually called a miscarriage, or it can be purposely induced...

 is permitted in Australia vary from state to state. In every state, abortion is legal to protect the life and health of the woman, though each state has a different definition.

There is no law anywhere in Australia that requires the notification or consent of a woman's sexual partner.