A swash plate type variable displacement compressor comprising: a housing having therein a suction chamber, a discharge chamber, a swash plate chamber, and a plurality of cylinder bores; a drive shaft rotatably supported in the housing and having an axis of rotation a swash plate that is rotatable in the swash plate chamber with the drive shaft; a link mechanism that is disposed between the drive shaft and the swash plate and allows a change in Inclination angle of the swash plate with respect to a plane extending perpendicularly to the axis of rotation of the drive shaft; a plurality of pistons that is reciprocally movably received in the respective cylinder bores; a conversion mechanism (11A, 11 B) that converts the rotation of the swash plate into reciprocal movement of the pistons in the respective cylinder bores with a stroke length according to the inclination angle of the swash plate; an actuator that changes the inclination angle of the swash plate; and a control mechanism that controls the actuator, characterized in that the actuator includes a lug member (51, 52) that is fixed on the drive shaft in the swash plate chamber that is opposed to the swash plate, and a movable body (13A, 13C) disposed between the lug member (51, 52) and the swash plate; the lug member (51, 52) has an insertion hole (5D, 510) through which the drive shaft is inserted, and a cylinder chamber (51A, 52A) that is recessed from the swash plate side of the lug member (51, 52) in such a manner as to surround the insertion hole (5D, 510); the movable body (13A, 13C) is movable in the cylinder chamber (51A, 52A) in the direction of an axis of rotation; a pressure control chamber is formed between the cylinder chamber (51A, 52A) and the movable body (13A, 13C) and moves the movable body (13A, 13C) with pressure in the pressure control chamber; the swash plate has a balancing weight (5C, 5H, 51, 5J) on the side opposite to the link mechanism with respect to the axis of rotation; the cylinder chamber (51A, 52A) has an accommodating chamber (51 C) that is opened toward the swash plate as the movable body (13A, 13C) moves in the direction that reduces the volume of the pressure control chamber with an increase in the inclination angle of the swash plate; and at least a part of the balancing weight (5C, 5H, 5I, 5J) is inserted in the accommodating chamber (51 C) when the inclination angle of the swash plate is maximum. a housing having therein a suction chamber, a discharge chamber, a swash plate chamber, and a plurality of cylinder bores; a drive shaft rotatably supported in the housing and having an axis of rotation a swash plate that is rotatable in the swash plate chamber with the drive shaft; a link mechanism that is disposed between the drive shaft and the swash plate and allows a change in Inclination angle of the swash plate with respect to a plane extending perpendicularly to the axis of rotation of the drive shaft; a plurality of pistons that is reciprocally movably received in the respective cylinder bores; a conversion mechanism (11A, 11 B) that converts the rotation of the swash plate into reciprocal movement of the pistons in the respective cylinder bores with a stroke length according to the inclination angle of the swash plate; an actuator that changes the inclination angle of the swash plate; and a control mechanism that controls the actuator, characterized in that the actuator includes a lug member (51, 52) that is fixed on the drive shaft in the swash plate chamber that is opposed to the swash plate, and a movable body (13A, 13C) disposed between the lug member (51, 52) and the swash plate; the lug member (51, 52) has an insertion hole (5D, 510) through which the drive shaft is inserted, and a cylinder chamber (51A, 52A) that is recessed from the swash plate side of the lug member (51, 52) in such a manner as to surround the insertion hole (5D, 510); the movable body (13A, 13C) is movable in the cylinder chamber (51A, 52A) in the direction of an axis of rotation; a pressure control chamber is formed between the cylinder chamber (51A, 52A) and the movable body (13A, 13C) and moves the movable body (13A, 13C) with pressure in the pressure control chamber; the swash plate has a balancing weight (5C, 5H, 51, 5J) on the side opposite to the link mechanism with respect to the axis of rotation; the cylinder chamber (51A, 52A) has an accommodating chamber (51 C) that is opened toward the swash plate as the movable body (13A, 13C) moves in the direction that reduces the volume of the pressure control chamber with an increase in the inclination angle of the swash plate; and at least a part of the balancing weight (5C, 5H, 5I, 5J) is inserted in the accommodating chamber (51 C) when the inclination angle of the swash plate is maximum.