Reremoana Farquharson Theodore is a New Zealand epidemiologist specialising in longitudinal research in Māori health and education.

[1] She is the director of the Dunedin Multidisciplinary Health and Development Study and was director of the University of Otago's National Centre for Lifecourse Research in Dunedin.

Her work in epidemiology began with being interviewer on the longitudinal Dunedin Study in 1998, and she then worked on further lifecourse research at the Institute of Psychiatry, King's College London.

[6] Theodore served on the Council of New Zealand's academy of sciences, the Royal Society Te Apārangi, from 2018 to 2021.

[7] She was a ministerial appointment to the Southern District Health Board from 2019 to 2022.