The 2019 Rugby World Cup was the ninth edition of the Rugby World Cup, the quadrennial world championship for men's rugby union teams. It was hosted in Japan from 20 September to 2 November in 12 venues all across the country. The opening match was played at Ajinomoto Stadium in Chōfu, Tokyo, with the final match being held at International Stadium Yokohama in Yokohama. This was the first time that the tournament had taken place in Asia and outside the traditional Tier 1 rugby nations.

Rugby union football, commonly known simply as rugby union or more often just rugby, is a close-contact team sport that originated at Rugby School in England in the first half of the 19th century. Rugby is simply based on running with the ball in hand. In its most common form, a game is played between two teams of 15 players each, using an oval-shaped ball on a rectangular field called a pitch. The field has H-shaped goalposts at both ends.