An optical unit with an image stabilization function includes a movable body having an annular holder for holding a camera module, a swing support mechanism for swingably supporting the movable body, and a fixing body for supporting the movable body with the swing support mechanism interposed between them. The holder includes three or more of a plurality of protrusions that project radially. The fixing body includes a plurality of arc surfaces that come into contact with each of the plurality of protrusions from the outer peripheral side. The swing support mechanism includes the plurality of protrusions and the plurality of arc surfaces. The arc surface is a concave curved surface obtained by transferring part of a virtual spherical surface centered on a preset swing center point.