To provide an oblique plate type variable displacement compressor capable of improving volume efficiency and discharge capability.

This oblique plate type variable displacement compressor compresses and discharges a sucked coolant by reciprocating pistons 6 in plural cylinder bores 10 in conjunction with the rotation of an oblique plate 5 installed in an oblique plate chamber 26, and can vary its discharge capacity by varying the tilt angle of the oblique plate 5 by adjusting the pressure of the coolant in the oblique plate chamber 26. Plural suction passages 36 allowing the oblique plate chamber 26 to communicate with the respective cylinder bores 10 are formed so that plural opening parts 360 opening from the respective suction passages 36 to the side walls 100 of the respective cylinder bores 10 are opened when the tilt angle of the oblique plate 5 is maximum and the respective pistons 6 are positioned at their dead center.