This is a list of host cities of the Olympic Games, both summer and winter, since the modern Olympics began in 1896. Since then, summer games have usually – but not always – celebrated a four-year period known as an Olympiad. There have been 29 Summer Olympic Games held in 23 cities, and 22 Winter Olympic Games held in 19 cities. In addition, three summer and two winter editions of the Games were scheduled to take place but later cancelled due to war: Berlin (summer) in 1916; Helsinki (summer) and Garmisch-Partenkirchen (winter) in 1940; and London (summer) and Cortina d'Ampezzo, Italy (winter) in 1944. The 1906 Summer Olympics were officially sanctioned and held in Athens. In 1949, the International Olympic Committee (IOC), decided to unrecognize the 1906 Games. Three cities have been chosen by the IOC to host upcoming Olympic Games: Pyeongchang for the 2018 Winter Olympics, Tokyo for the 2020 Summer Olympics, and Beijing for the 2022 Winter Olympics.
In 2022, Beijing will become the only city that has held both the summer and winter Olympic Games. Seven cities have hosted the Olympic Games more than once: Athens (1896 and 2004 Summer Olympics), Paris (1900 and 1924 Summer Olympics), London (1908, 1948 and 2012 Summer Olympics), St. Moritz (1928 and 1948 Winter Olympics), Lake Placid (1932 and 1980 Winter Olympics), Los Angeles (1932 and 1984 Summer Olympics), and Innsbruck (1964 and 1976 Winter Olympics). Tokyo will join this list upon hosting the 2020 Summer Olympics, having previously hosted the summer games of 1964 and also Beijing upon hosting the 2022 Winter Olympics, having previously hosted the summer games of 2008. In addition, hosted the 1912 Summer Olympics and the equestrian portion of the 1956 Summer Olympics. London became the first city to have hosted three Games with the 2012 Summer Olympics. The United States has hosted a total of eight Olympic Games, more than any other country, followed by France with five editions. Canada, Germany, Italy, Japan, and the United Kingdom have each hosted three Games.