An optical disk recording and/or reproducing apparatus records and/or reproduces information on an information record surface of an optical disk loaded thereto. The optical pickup apparatus for the optical disk recording and/or reproducing apparatus is provided with: two types of optical pickups for at least two types of optical disks respectively; first and second guiding rails arranged substantially parallel to each other such that the information record surface of the loaded optical disk is disposed between the first and second guiding rails, for respectively guiding the optical pickups along the information record surface of the loaded optical disk in a radial direction of the loaded optical disk; first and second retracting rails respectively connected to the first and second guiding rails, for retracting thereonto the optical pickups from the first and second guiding rails through linkages with the first and second guiding rails respectively; a rotator frame for holding the first and second retracting rails; and a rotating mechanism for rotating the rotator frame around an axis parallel to the first and second retracting rails and for swapping the first and second retracting rails to each other.
