Joanne Mary Baxter is a New Zealand Māori public health medicine physician and academic and affiliates with the iwi of Ngāi Tahu, Kāti Māmoe, Waitaha and Ngāti Apa ki te Rā Tō. She is a professor and director of Kōhatu, Centre for Hauora Māori, and co-director of the Māori Health Workforce Development Unit at the University of Otago. Baxter took up the position of dean of the Dunedin School of Medicine on 1 July 2022, and is the first Māori woman in the role.