A spindle motor is disclosed. The spindle motor includes a base including a PCB, a bearing housing installed on the base and having a bearing therein, a rotating shaft rotatably supported by the bearing, a stator including a core arranged around the bearing housing and a coil wound around the core, a rotor including a rotor yoke supported by the rotating shaft and a magnet coupled to the rotor yoke, and a stopper supported by the base at an outer side of the rotor yoke, and partially located above a portion of the rotor yoke to inhibit the rotor yoke from moving upward.