A valve timing change device which changes an opening/closing timing of an intake valve or an exhaust valve driven by a cam shaft, the valve timing change device comprising: a housing rotor that rotates on an axis of the cam shaft; a vane rotor that demarcates an advance angle chamber and a delay angle chamber in cooperation with the housing rotor and rotates on the axis; a fastening bolt that fastens the vane rotor such that the vane rotor rotates integrally with the cam shaft, and has oil passages; and an advance angle oil passage that communicates with the advance angle chamber and a delay angle oil passage that communicates with the delay angle chamber, via oil passages which are open at intervals on an outer circumferential surface of the fastening bolt, wherein the vane rotor includes a rotor body that is formed of a material having a thermal expansion coefficient greater than the thermal expansion coefficient of the fastening bolt, and a rotor sleeve that is formed of a material having a thermal expansion coefficient equal to the thermal expansion coefficient of the fastening bolt and is integrally incorporated such that the rotor sleeve is not in contact with the cam shaft and comes into tight contact with the outer circumferential surface of the fastening bolt, in at least a region in which the advance angle oil passage and the delay angle oil passage are blocked from each other; the valve timing change device being characterized in that the rotor sleeve is press-fitted into the rotor body and that the rotor body includes a small-diameter inner circumferential portion which comes into tight contact with the outer circumferential surface of the fastening bolt, and a large-diameter inner circumferential portion which is formed to have a larger diameter than the small-diameter inner circumferential portion, and that the rotor sleeve includes a ring-shaped end surface which demarcates one of the advance angle oil passage and the delay angle oil passage in cooperation with the small-diameter inner circumferential portion in a state of being press-fitted into the large-diameter inner circumferential portion, a tubular portion which comes into tight contact with the outer circumferential surface of the fastening bolt and demarcates the other of the advance angle oil passage and the delay angle oil passage, and a flange portion which abuts on an opening end surface of the large-diameter inner circumferential portion, on which the fastening bolt directly abuts, and which is pressed in an axis direction. a housing rotor that rotates on an axis of the cam shaft; a vane rotor that demarcates an advance angle chamber and a delay angle chamber in cooperation with the housing rotor and rotates on the axis; a fastening bolt that fastens the vane rotor such that the vane rotor rotates integrally with the cam shaft, and has oil passages; and an advance angle oil passage that communicates with the advance angle chamber and a delay angle oil passage that communicates with the delay angle chamber, via oil passages which are open at intervals on an outer circumferential surface of the fastening bolt, wherein the vane rotor includes a rotor body that is formed of a material having a thermal expansion coefficient greater than the thermal expansion coefficient of the fastening bolt, and a rotor sleeve that is formed of a material having a thermal expansion coefficient equal to the thermal expansion coefficient of the fastening bolt and is integrally incorporated such that the rotor sleeve is not in contact with the cam shaft and comes into tight contact with the outer circumferential surface of the fastening bolt, in at least a region in which the advance angle oil passage and the delay angle oil passage are blocked from each other; the valve timing change device being characterized in that the rotor sleeve is press-fitted into the rotor body and that the rotor body includes a small-diameter inner circumferential portion which comes into tight contact with the outer circumferential surface of the fastening bolt, and a large-diameter inner circumferential portion which is formed to have a larger diameter than the small-diameter inner circumferential portion, and that the rotor sleeve includes a ring-shaped end surface which demarcates one of the advance angle oil passage and the delay angle oil passage in cooperation with the small-diameter inner circumferential portion in a state of being press-fitted into the large-diameter inner circumferential portion, a tubular portion which comes into tight contact with the outer circumferential surface of the fastening bolt and demarcates the other of the advance angle oil passage and the delay angle oil passage, and a flange portion which abuts on an opening end surface of the large-diameter inner circumferential portion, on which the fastening bolt directly abuts, and which is pressed in an axis direction.