The Japanese national under-18 and under-19 basketball team represents Japan in international basketball competitions. It is administered by the Japan Basketball Association. It represents the country in international under-19 and under-18 (under age 19 and under age 18) basketball competitions.

At the 2017 FIBA Under-19 World Cup, Japan finished 10th, ahead of every competitor from FIBA Oceania, FIBA Asia and FIBA Africa.

Prominent members had been Rui Hachimura and also Kai Toews and Isaiah Murphy. Murphy played with his Japanese name Shinsaku Enomoto.

Japan U19 is the national basketball team representing Japan in international competitions for players under the age of 19. The team is composed of talented young athletes who showcase their skills and passion for the game on the court. Known for their speed, agility, and teamwork, Japan U19 is a formidable opponent for any team they face. With a strong emphasis on player development and a commitment to excellence, Japan U19 is a rising force in the world of youth basketball. Fans can expect to see exciting and competitive games whenever Japan U19 takes the court.