Yvon Chouinard (born November 9, 1938) is an American rock climber, environmentalist, and outdoor industry billionaire businessman.
His company, Patagonia, is known for its environmental focus.
Chouinard is also a surfer, kayaker, and falconer and is particularly fond of tenkara fly-fishing.
He has written about climbing issues and ethics and on mixing environmentalism and business.