Catharine Antonia Winstanley is a Canadian behavioural neuroscientist. She is a Full professor in the Department of Psychology and the Djavad Mowafaghian Centre for Brain Health at the University of British Columbia. In this role, she co-created the world’s first rat casino in an animal lab experiment to model human gambling. In 2020, Winstanley was elected to the Royal Society of Canada's College of New Scholars, Artists and Scientists.