The Australia women's national under-19 basketball team is the women's basketball team representing Australia for all international under-19, under-18, and under-17 women's basketball competitions, including the U19 Women's World Cup, U18 Asia Cup, and the U17 Oceania Cup, administered by Basketball Australia. The team is nicknamed the Gems, an abbreviation for the word gemstone. In 1993, the Gems (which won a gold medal) won the Australian Institute of Sport Athlete (team) of the Year.
The first FIBA U19 World Championship was in 1985, and the Gems have participated in every tournament to date. From 1985, the under-19 World Championships were held every four years. From 2005, they are held every two years.