Marion Maddox FAHA is an Australian author, academic and political commentator.

She is a professor in the department of Modern History, Politics and International Relations at Macquarie University.

Maddox is a regular commentator on issues of religion and politics in the Australian media and is a member of the Uniting Church.

She authored the book God Under Howard: The rise of the religious right in Australian politics which compared the Howard Government with the religious right in the United States and criticised the decline of mainstream Christianity in Australia.

In 2002 the Australian Association for the Study of Religion (AASR) Women's Caucus invited Maddox to give the annual Penny Magee Memorial Lecture.