The 1976 Summer Olympics, officially known as the Games of the XXI Olympiad and commonly known 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 was the first and, so far, only Summer Olympic Games to be held in Canada. Toronto hosted the 1976 Summer Paralympics the same year as the Montreal Olympics, which still remains the only Summer Paralympics to be held in Canada. Calgary and Vancouver later hosted the Winter Olympic Games in 1988 and 2010, respectively.

The 1980 Summer Olympics, officially known as the Games of the XXII Olympiad and commonly known as Moscow 1980, were an international multi-sport event held from 19 July to 3 August 1980 in Moscow, Soviet Union, in present-day Russia. The games were the first to be staged in an Eastern Bloc country, as well as the first Olympic Games and only Summer Olympics to be held in a Slavic language-speaking country. They were also the only Summer Olympic Games to be held in a socialist state until the 2008 Summer Olympics held in China. These were the final Olympic Games under the IOC Presidency of Michael Morris, 3rd Baron Killanin, before he was succeeded by Juan Antonio Samaranch.