A scroll compressor includes a compression mechanism having fixed and movable scrolls forming a compression chamber, a motor to drive the movable scroll, a drive shaft, a casing, a housing accommodated inside the casing, and a floating member supported by the housing. The casing accommodates the compression mechanism, the motor, and the drive shaft. The floating member can be pushed toward the movable scroll by a pressure in a back pressure space formed between the floating member and the housing. The floating member may include a plurality of supported portions arranged circumferentially at three or more locations, and the housing may include a supporting portion supporting the supported portions. Alternatively, the floating member may include a body member and an outer peripheral member separate from the body member, the outer peripheral member mounted to an outer periphery of the body member, and the housing supports the outer peripheral member.