The 2009 FIBA Under-19 World Championship for Women (Thai: บาสเกตบอลหญิงชิงแชมป์โลกรุ่นอายุไม่เกิน 19 ปี 2009) was hosted by Thailand from July 23 until August 2, 2009. Teams played a round robin schedule, with the top four teams of the eighth-final four advancing to the knockout stage.