A swing arm driving type optical recording/reproducing apparatus has a plurality of optical pickups (30,40) each for use with a respective information recording surface (20a,20b) of one or more optical disks (20). The apparatus also comprises a swing member (50) including a mount (51) on which is located a light source (31,41), an optical path changing unit (33,43), and a photodetector (39,49) which form one part of each of the optical pickups (30,40). A plurality of swing arms (52,55) extend from the mount (51) each including a suspension arm (53,56) for elastically biasing a slider (54,57) into contact with the respective information recording surface (20a,20b) of the disk (20), the slider (54,57) carrying an objective lens (37,47) forming the other part of each optical pickup (30,40). A supporting unit (60) is provided for supporting the swing member (50) to be reciprocally rotatable centering around one pivot point, in co-operation with a magnetic driver (70).