Actuator and optical unit

An actuator capable of connecting with a sensor unit and a lens unit, the actuator comprising:

• a movable body which is to be connected with the lens unit and the sensor unit;
• a fixed body which holds the movable body in a turnable state with at least one of intersecting directions intersecting an optical axis direction as a turning axis;
• and
• a gimbal mechanism which comprises:
• a turnable member which has a base plate in a frame shape into which the movable body is inserted and a plurality of leg parts which are extended from the base plate along the optical axis direction;
• and
• support parts which are engaged with the leg parts and support the leg parts in a turnable state;
• wherein the turnable member comprises, as the leg parts, a first leg part which is protruded from the base plate in an inner side direction and then extended along the optical axis direction, and a second leg part which is protruded from the base plate in an outer side direction and then extended along the optical axis direction.