The present invention obtains a multi-shaft drive device that can protect a rack and pinion from operative load input to a selector. The multi-shaft drive device is provided with: an input-side bevel gear (52) to which motor power is transmitted; and an output-side bevel gear (34) that transmits the power transmitted from the input-side bevel gear (52) to a movable mechanism. The multi-shaft drive device is further provided with: a selector (10) that connects/disconnects the meshing of the output-side bevel gear (34) and the input-side bevel gear (52); and a rotating shaft (16) that causes the selector (10) to slide via a rack (18) and pinion (17). Furthermore, the angle of rotation of the rotating shaft (16) is regulated by the end of the pinion (17) contacting a vertical wall (1A) of a case (1).