A scroll compressor includes a casing, a low-pressure space and a compression mechanism. The compression mechanism includes fixed and movable scrolls, a fluid chamber including first and second compression chambers, and an adjustment mechanism. The fluid chamber has different discharge start points between the first and second compression chambers. An oil inflow groove is formed in one sliding surface, and an oil relief passage is formed in the other sliding surface. The oil relief passage includes a communication portion that communicates with the oil inflow groove in a predetermined angular range, lubricating oil flowing from the oil inflow groove into the low-pressure space through the communication portion. The predetermined angular range is from a position between a discharge start point of the first compression chamber and a discharge start point of the second compression chamber to a position after the discharge start of the second compression chamber.