The Exposition Universelle of 1900, better known in English as the 1900 Paris Exposition, was a world's fair held in Paris, France, from 14 April to 12 November 1900, to celebrate the achievements of the past century and to accelerate development into the next. It was the sixth of ten major expositions held in the city between 1855 and 1937. It was held at the esplanade of Les Invalides, the Champ de Mars, the Trocadéro and at the banks of the Seine between them, with an additional section in the Bois de Vincennes, and it was visited by more than fifty million people. Many international congresses and other events were held within the framework of the exposition, including the 1900 Summer Olympics.

The 1900 Summer Olympics, today officially known as the Games of the II Olympiad and also known as Paris 1900, were an international multi-sport event that took place in Paris, France, from 14 May to 28 October 1900. No opening or closing ceremonies were held. They were the first Summer Olympics ever held in a non-leap year until the 2020 Summer Olympics, which were delayed to 2021 due to the COVID-19 Pandemic.