To provide an actuator that achieves narrow framing with respect to a lens holder.
The actuator 20 includes a holder 7, a coil 5, each magnet 3, each columnar support 6, and a base 9 having a quadrangular shape in which each support 6 is arranged. The support 6 is provided at each corner part including each corner of the base 9. Either of the coil 5 and each magnet 3 is held by the holder 7, while the other of the coil and each magnet is held by each support 6. Each magnet 3 is arranged so as to face each support 6.