A spindle motor inclination angle adjusting mechanism in an optical disk apparatus including a spindle motor. The spindle motor is mounted on a motor base (122) in such a manner as to be tiltable in a direction around a second tilt movement axis. The motor base is mounted on a chassis in such a manner as to be tiltable in a direction around a first tilt movement axis. The spindle motor is urged in the directions around the first and second tilt movement axes by a leaf spring. By turning adjuster screws, the spindle motor is moved backward against the resilient force of the spring, thereby effecting adjustment of the inclination angle thereof in the directions around the first and second tilt movement axes independently.