The opening of the Summer Olympics in Montreal is marred by 25 African teams boycotting the games because of New Zealand's participation. Contrary to rulings by other international sports organizations, the IOC had declined to exclude New Zealand because of their participation in South African sporting events during apartheid.

The 1976 Summer Olympics, officially known as the Games of the XXI Olympiad and officially branded as Montreal 1976, were an international multi-sport event held from July 17 to August 1, 1976, in Montreal, Quebec, Canada. Montreal was awarded the rights to the 1976 Games at the 69th IOC Session in Amsterdam on May 12, 1970, over the bids of Moscow and Los Angeles. It is the only Summer Olympic Games to be held in Canada. Toronto hosted the 1976 Summer Paralympics the same year as the Montreal Olympics, also the only Summer Paralympics to be held in Canada. Calgary and Vancouver later hosted the Winter Olympic Games in 1988 and 2010, respectively. This was the first of two consecutive Olympic games held in North America, followed by the 1980 Winter Olympics in Lake Placid.