The 1970 FIFA World Cup was the ninth edition of the FIFA World Cup, the quadrennial international football championship for men's senior national teams. Held from 31 May to 21 June in Mexico, it was the first World Cup tournament held outside Europe and South America, and also the first held in North America. Teams representing 75 nations from all six populated continents entered the competition, and its qualification rounds began in May 1968. Fourteen teams qualified from this process to join host nation Mexico and defending champions England in the 16-team final tournament. El Salvador, Israel and Morocco made their debut appearances at the final stage.

The FIFA World Cup, often simply called the World Cup, is an international association football competition among the senior men's national teams of the members of the Fédération Internationale de Football Association (FIFA), the sport's global governing body. The tournament has been held every four years since the inaugural tournament in 1930, with the exception of 1942 and 1946 due to the Second World War. The reigning champions are Argentina, who won their third title at the 2022 tournament.