The 2016 Summer Olympics, officially known as the Games of the XXXI Olympiad, are a major international multi-sport event to be celebrated in the tradition of the Olympic Games, as governed by the International Olympic Committee (IOC).

The host city of the Games will be Rio de Janeiro as announced at the 121st IOC Session (which is also the 13th Olympic Congress) held in Copenhagen, Denmark, on October 2, 2009. They are scheduled to be held from August 5 to 21, 2016. The 2016 Summer Paralympics will be held in the same city and organized by the same committee, and are scheduled to be held from September 7 to 18.

The Rio 2016 Summer Olympic Games will be the first edition held in South America, the second in Latin America (after Mexico City), the third edition held in the southern hemisphere (the first of which outside of Australia), and the first Games in a lusophone (Portuguese-speaking) country.