Troy Day is a Professor and the Associate Head of the Department of Mathematics and Statistics at Queen’s University. He is an applied mathematician whose research focuses on dynamical systems, optimization, and game theory, applied to models of infectious disease dynamics and evolutionary biology. He is the author of two calculus textbooks for the life sciences and a textbook on mathematical modeling. He is an elected Fellow of the Royal Society of Canada, an elected Fellow of the American Association for the Advancement of Science, and has been the recipient of the E.W.R. Steacie Prize, an E.W.R. Steacie Fellowship, and a Canada Council Killam Research Fellowship.