Clubul Sportiv Municipal București, also known as CSM București, CSM or CSM Bucharest, is a professional women's handball team based in Bucharest, Romania, that competes in the Liga Naţională and the EHF Champions League. Founded in 2007, the club has traditionally worn a blue kit since inception. The team has played its home matches in the 5,300-capacity Polyvalent Hall in the Tineretului Park in southern Bucharest. CSM București established itself as a major force in both Romanian and European handball in the late 2010s, winning EHF Champions League in its debut season and reaching the Final Four three consecutive times. This success was replicated in the league, where the club won four consecutive times. The official CSM mascot is a "tiger". CSM Bucharest is one of the most widely supported handball clubs in Romania.

Polyvalent Hall of Bucharest is a multi-purpose indoor arena on the Tineretului Park in Bucharest, Romania. It is home to the CSM București of the National Handball League (LNHF). With a seating capacity of 5,300, the Sala Polivalentă also regularly hosts concerts, conventions and shows.