An optical disk device for driving an optical disk having a rotation center and a recording track around the rotation center. The device includes a light source which emits a light beam, an objective lens which irradiates a position on the recording track of the optical disk with the light beam from the light source, and a lens holding member which holds the objective lens. The lens holding member has a plurality of fitting sections. A plurality of elastic supporting members each has a longitudinal length and is fitted at one end thereof to one of the fitting sections of the lens holding member, and a supporting unit base has a plurality of anchor sections supporting the other end of each of the elastic supporting members. The plurality of anchor sections are arranged on first and second sides with reference to a tangent line hypothetically drawn tangentially to the recording track at the position irradiated with the light beam via the objective lens, the rotation center of the optical disk being located on the second side. Each of the anchor sections that are arranged on the first side are arranged closer to the objective lens in the extending direction of the tangent line than are the anchor sections arranged on the second side.