Ryan O'Connor is a historian of Canada and the environment. Having completed a PhD at the University of Western Ontario, he is an Associate Member of the Centre for Environment, Heritage and Policy at the University of Stirling (Scotland).

Ryan is the author of The First Green Wave: Pollution Probe and the Origins of Environmental Activism in Ontario (UBC Press), which was released in paperback in April 2015. He is currently working on his second book, which examines the golden age of advertising in Canada.