The 2021 FIBA Under-19 Women's Basketball World Cup (Hungarian: 2021-es FIBA 19 év alatti kosárlabda-világbajnokság) was a tournament organised by FIBA for women's youth national teams aged 19 years old and below. The tournament was hosted in Debrecen, Hungary from 7 to 15 August 2021. The United States won their ninth title by defeating Australia in the final. Hungary won their first ever medals after a win over Mali.