2021 FIFA U-20 World Cup yaifanirwa kunge iri yechi23 edition yeFIFA U-20 World Cup, iyo biennial international varume vechidiki nhabvu nhabvu inokwikwidzwa nezvikwata zvepasi pemakore makumi maviri zvemubatanidzwa wenhengo dzeFIFA, kubvira payakatanga muna 1977
seFIFA World Youth Championship. Yakanga yakarongerwa kuitirwa neIndonesia pakati pa20 Chivabvu na12 Chikumi 2021, iyo yaizove yekutanga FIFA mutambo unotambirwa nenyika. Yaizovawo yechipiri U-20 World Cup kuitirwa muSoutheast Asia, yekutanga kubvira 1997, uye yekutanga FIFA mutambo mudunhu iri kubvira 2012 FIFA Futsal World Cup.