The present invention provides an actuator locking mechanism which is structurally simple and has a strong locking force. The actuator locking mechanism has an actuator on which a slider having a transducer mounted thereon for transferring information between the transducer and a storage medium is mounted and which is driven so that the element scans the storage medium, an attracting member which is magnetically attractable with at least a portion of the actuator when the actuator is driven so that the slider is moved to a non-recording region of the storage medium, a support member on which the attracting member is mounted and which is rotatably attached to the base, and a spring which is engaged with the support member and gives elastic force to the support member so that the actuator attracted magnetically to the attracting member is given force in a direction where the slider is directed from the recording region of the storage medium to the non-recording region. The spring absorbs an external impact force and therefore a locking force is enhanced.