A control device for an automatic transmission is disclosed. The control device is provided with a base member mounted on a vehicle body. A shift lever is pivotably supported by the base member. The shift lever has a positioning pin movable in the axial direction of the shift lever. A guide member for guiding the shift lever is mounted on the base member, the guide member has a parking position part and a moving position part for engaging the positioning pin. The lock bushing for blocking disengagement of the positioning pin from the parking position part is mounted on the guide member and is supported by the guide member in a pivotable manner on a vertical pivoting locus surface. A lock solenoid for pivoting the lock bushing when releasing the shift-lock is mounted on the guide member. A lock releasing lever for manually pivoting the lock bushing to a shift-lock releasing position is mounted on the shift lever in a manner allowing movement parallel to the vertical pivoting locus surface.