The Japan women's national under-18 and under-19 basketball team is a national basketball team of Japan, administered by the Japan Basketball Association. It represents the country in international under-18 and under-19 women's basketball competitions.
At the 2019 FIBA Under-19 Women's Basketball World Cup, Japan finished 8th out of 16 overall. The team displayed some strong showings including its game against eventual bronze medalist Spain, where Japan won two of the four quarters.