An optical unit includes: a fixing part including a front frame portion, a rear frame portion, and a fixing part main body; a movable part arranged slidably relative to the fixing part main body; and a voice coil motor including a magnetic portion, and a coil arranged at the fixing part main body and positioned on a radially outer side of the fixing part main body with respect to the magnetic portion, the voice coil motor being capable of moving the movable part relative to the fixing part main body along a direction of the optical axis. A maximum dimension of the fixing part main body in a first direction parallel to a magnetization direction of the magnetic portion is greater than a maximum dimension of the fixing part main body in a second direction perpendicular to the first direction and the direction of the optical axis.