The Luxembourg Basketball Federation (Luxembourgish: Lëtzebuerger basketballfederatioun, French: Fédération Luxembourgeoise de Basketball, German: Luxemburger Basketballföderation) also known as FLBB, is the governing body of basketball in Luxembourg. It was founded in 1934, and became members of FIBA in 1946.

The Luxembourg Basketball Federation operates the Luxembourg men's national team and Luxembourg women's national team. They organise national competitions in Luxembourg, for both the men's and women's senior teams and also the youth national basketball teams.

The top professional league in Luxembourg is the Total League.