Joseph Beverly MacInnis D.Sc. is a Canadian physician, author, and diver. In 1974, MacInnis was the first scientist to dive in the near-freezing waters beneath the North Pole. In 1976 he became a member of the Order of Canada. MacInnis currently studies leadership in high risk environments and gives leadership presentations in North America and Europe. His audiences have included Microsoft, IBM, National Geographic, Rolex, Visa, Toyota and the U.S. Naval Academy.