A variable displacement swash plate type compressor comprising: a cylinder block (12, 13), which forms a housing and has a plurality of cylinder bores (12a, 13a) and a crank chamber; a plurality of pistons reciprocally each received in one of the cylinder bores (12a, 13a); a rotary shaft, which is rotationally supported by the housing; a swash plate, which is accommodated in the crank chamber and rotated by a drive force of the rotary shaft, wherein an inclination angle of the swash plate relative to the rotary shaft is changeable, and the pistons are engaged with the swash plate; a movable body coupled to the swash plate, wherein the movable body changes the inclination angle of the swash plate by moving along an axis of the rotary shaft; a control pressure chamber formed in the housing, wherein control gas is introduced to the control pressure chamber to change a pressure in the control pressure chamber, so that the movable body is moved; and a link mechanism (23c, 31b, 41, 42, 43), which permits the inclination angle of the swash plate to be changed by movement of the movable body, wherein the pistons, which are engaged with the swash plate, are reciprocated by a stroke that corresponds to the inclination angle of the swash plate; the variable displacement swash plate type compressor being characterized by: two first support portions formed at the movable body; a second support portion provided to the swash plate and located between the first support portions; and a first coupling member, which couples the first support portions and the second support portion to each other, wherein the first support portions are fixed to the first coupling member, the second support portion is pivotally supported with respect to the first coupling member, the swash plate has a top dead center associated part for positioning each piston at a top dead center and a bottom dead center associated part for positioning each piston at a bottom dead center, the top dead center associated part and the bottom dead center associated part are arranged with the rotary shaft in between, and the second support portion is arranged between the top dead center associated part and the bottom dead center associated part. a cylinder block (12, 13), which forms a housing and has a plurality of cylinder bores (12a, 13a) and a crank chamber; a plurality of pistons reciprocally each received in one of the cylinder bores (12a, 13a); a rotary shaft, which is rotationally supported by the housing; a swash plate, which is accommodated in the crank chamber and rotated by a drive force of the rotary shaft, wherein an inclination angle of the swash plate relative to the rotary shaft is changeable, and the pistons are engaged with the swash plate; a movable body coupled to the swash plate, wherein the movable body changes the inclination angle of the swash plate by moving along an axis of the rotary shaft; a control pressure chamber formed in the housing, wherein control gas is introduced to the control pressure chamber to change a pressure in the control pressure chamber, so that the movable body is moved; and a link mechanism (23c, 31b, 41, 42, 43), which permits the inclination angle of the swash plate to be changed by movement of the movable body, wherein the pistons, which are engaged with the swash plate, are reciprocated by a stroke that corresponds to the inclination angle of the swash plate; the variable displacement swash plate type compressor being characterized by: two first support portions formed at the movable body; a second support portion provided to the swash plate and located between the first support portions; and a first coupling member, which couples the first support portions and the second support portion to each other, wherein the first support portions are fixed to the first coupling member, the second support portion is pivotally supported with respect to the first coupling member, the swash plate has a top dead center associated part for positioning each piston at a top dead center and a bottom dead center associated part for positioning each piston at a bottom dead center, the top dead center associated part and the bottom dead center associated part are arranged with the rotary shaft in between, and the second support portion is arranged between the top dead center associated part and the bottom dead center associated part. two first support portions formed at the movable body; a second support portion provided to the swash plate and located between the first support portions; and a first coupling member, which couples the first support portions and the second support portion to each other, wherein the first support portions are fixed to the first coupling member, the second support portion is pivotally supported with respect to the first coupling member, the swash plate has a top dead center associated part for positioning each piston at a top dead center and a bottom dead center associated part for positioning each piston at a bottom dead center, the top dead center associated part and the bottom dead center associated part are arranged with the rotary shaft in between, and the second support portion is arranged between the top dead center associated part and the bottom dead center associated part.