Craig Purchase is a biology professor at Memorial University of Newfoundland. His research interests include sperm biology, parental effects, local adaptation, phenotypic plasticity, and life history variation. Previously, he worked as a research scientist and NSERC visiting fellow at Fisheries and Oceans Canada.

Purchase holds a PhD in Ecology and Environmental Biology from University of Toronto. He received master's and bachelor's degree from Memorial University of Newfoundland.