The uniform vibration of an optical fiber is enabled and a desired scan trajectory is made available. Provided is a fiber-optic scanner (1) equipped with a light-guiding optical fiber (6) a plurality of vibration generating units (10) disposed circumferentially at equal intervals on an outer peripheral surface of the optical fiber (6) located on a base end side thereof at a predetermined distance from the emission end (6b) of the optical fiber (6) to vibrate an emission end (6b) of the optical fiber (6) in a plurality of directions and a vibration damping member (8) disposed at least in a position between base end-side edges of the vibration generating units (10) and the emission end (6b) of the optical fiber (6), wherein the vibration damping member (8) has a uniform shape of a rotating body rotated around the axis line of the optical fiber (6).
