The FIBA Under-19 Basketball World Cup (formerly FIBA Under-19 World Championship) is the under-19 men's world basketball championship organised by the International Basketball Federation (FIBA). From its inauguration in 1979, until 2007, it was held every four years. Since 2007, it has been held biennially. The current champions are United States in 2025. The next edition will take place in Czech Republic in 2027.

The U19 World Championship is a premier international basketball tournament that brings together the best young talent from around the globe. Featuring national teams composed of players under the age of 19, this competition showcases the future stars of international basketball. Held every two years, the tournament offers a platform for emerging athletes to demonstrate their skills, compete at the highest level, and gain invaluable experience on the world stage. With intense matchups, thrilling performances, and a celebration of diverse basketball styles, the U19 World Championship is a must-watch event for fans and scouts alike, highlighting the next generation of basketball excellence.