Yvon Chouinard is an American rock climber, environmentalist, philanthropist, and outdoor industry businessman. His company, Patagonia, is known for its commitment to protecting the environment. 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.
Chouinard's father was a French Canadian handyman, mechanic, and plumber. In 1947, Yvon and his family moved from Lewiston, Maine, to Southern California. They were Catholic. His early climbing partners included Royal Robbins and Tom Frost. A Sierra Club member, in his youth, he founded the Southern California Falconry Club, and it was his investigations of falcon Aeris that led him to rock climbing. To save money and make adaptations to the way he was climbing, he decided to make his own climbing tools, teach himself blacksmithing, and eventually start a business.