A variable displacement compressor increases the lubricity of oil circulated from a discharge chamber to a crank chamber. A center bore (101b) arranged in the center of a cylinder block (101) comprises: a first bore (101b1) supporting a sliding bearing (131) of the drive shaft (110); a second bore (101b2) arranged such that the peripheral wall of the region on the valve plate side is radially outwards of the first bore (101b1); and a third bore (101b3) which is connected to the crank chamber and is arranged radially outwards of the first bore (101b1). A pressure supply passage (145) allows a part of the exhaust coolant to drain from the exhaust chamber to the crank chamber, and is configured from the second bore (101b2), a first passage (145a) which connects the second bore (101b2) and the discharge chamber, a second passage (145b) which communicates with the second bore (101b2). The pressure supply passage (145) extends in the axial direction from one end surface of the drive shaft (110) to inside of the drive shaft (110). A third passage (145c) is formed so as to open to the outer peripheral surface of the drive shaft (110) substantially perpendicularly to the second passage (145b) and to communicate with the crank chamber.