Dorinda Rose Cox (born c. 1976) is an Australian politician and a Yamatji-Noongar woman. She is the first Indigenous woman to represent Western Australia in the Senate. In 2020 she won preselection as the Australian Greens' lead Senate candidate in Western Australia, and the following year she was appointed to fill the casual vacancy caused by the resignation of Senator Rachel Siewert. Dorinda Cox was then elected as the Australian Greens Senator for Western Australia at the 2022 Federal Election.