A control valve includes: a body having valve holes for communicating an inlet port and the outlet ports together, respectively; valve elements for opening and closing valve sections by contacting and leaving the valve holes, respectively; a stepping motor having a rotor for driving the valve elements in the opening and closing directions of the valve sections; and a valve actuating member that drives the valve elements in the opening and closing directions of the valve sections by converting a rotational movement of the rotor around the axis line thereof into a translational movement of the valve actuating member in the axis line direction. The valve actuating member is supported by the rotor so as to be capable of making a translational movement of the valve actuating member in the axial direction with respect to the rotor, while a rotational movement with respect to the rotor is regulated.