1966 Can-Am season

The 1966 Canadian-American Challenge Cup was the inaugural season of the Can-Amauto racing series, co-organized by the Sports Car Club of America and the Canadian Automobile Sport Clubs. The series was intended for cars that met international Group 7 regulations for sports cars, and featured two-hour sprint races. It began on September 11, 1966, and ended on November 13, 1966, after six races, with the Johnson Wax Trophy awarded to the drivers' champion.

Former Formula One World ChampionJohn Surtees of England won the championship driving a Chevrolet-powered Lola T70 Mk. 2 entered by his own team, winning three of the season's races. Championship runner-up Mark Donohue of the United States won one race, as did Phil Hill and Dan Gurney.