2017 FIFA U-20 World Cup

The 2017 FIFA U-20 World Cup was the 21st edition of the FIFA U-20 World Cup, the biennial international men's youth football championship contested by the under-20 national teams of the member associations of FIFA, since its inception in 1977 as the FIFA World Youth Championship. The tournament was hosted by South Korea between 20 May and 11 June 2017.

Along with Japan and Mexico, South Korea became the third nation to have hosted all of FIFA Men's international competitions, namely the 2002 FIFA World Cup, the 2001 Confederations Cup and the 2007 FIFA U-17 World Cup.

The South Korean FA originally placed a request of hosting the tournament away from the traditional June/July period, as it would clash with South Korea's rainy season, as well as any possible national team selection were they to qualify for the Confederations Cup.

Serbia, the 2015 champions, were not able to defend their title as they failed to reach the final round of the UEFA qualifying tournament. In doing so, they became the fifth consecutive incumbent title holder to fail to qualify for the subsequent tournament.

England won their first FIFA U-20 World Cup title, winning in the final against Venezuela 1–0.