The Australian fifty-dollar note is an Australian banknote with a face value of fifty Australian dollars (AUD$50). Since 1995 it has been a polymer banknote featuring portraits of Edith Cowan, first female member of an Australian parliament, and inventor and Australia's first published Aboriginal Australian author, David Unaipon.

The Australian dollar is the official currency and legal tender of Australia, including all of its external territories, and three independent sovereign Pacific Island states: Kiribati, Nauru, and Tuvalu. In April 2022, it was the sixth most-traded currency in the foreign exchange market and as of Q4 2023 the seventh most-held reserve currency in global reserves.