Provided are a lens driving device, a camera module, and a camera-mounted device for which the miniaturization and weight reduction can be achieved and the reliability can also be improved. The lens driving device includes auto-focusing and shake-correcting driving parts utilizing a voice coil motor. An autofocus fixing part includes a Hall element configured to detect a position of an autofocus movable part in the optical-axis direction, and the autofocus movable part includes a position-detecting magnet arranged near the Hall element. Both of an auto-focusing magnet part and the position-detecting magnet are radially magnetized.