Marilyn Renfree is an Australian zoologist.
Renfree was born in Brisbane, Queensland, and studied zoology at the Australian National University, where she was admitted as a Doctor of Philosophy in 1972. In 1973, Renfree was a Fulbright Fellow at the University of Tennessee.
Since 1991 Renfree has been professor of zoology in the Faculty of Science at the University of Melbourne.
Renfree was awarded an Australian Research Council Federation Fellowship in 2004. Renfree was awarded the Clarke Medal in 2012 by the Royal Society of New South Wales.