A disk loading apparatus (1, 1A) for loading a disk to a loaded position, comprising: an apparatus body having an insertion opening corresponding to a diametrical dimension of the disk and having the loaded position therein to which the disk inserted into the insertion opening is to be positioned; a pair of front arms (31, 32) disposed in a substantially symmetrical relationship with each other with respect to a virtual straight line extending along the loading direction of the disk and passing a substantially central position of the insertion opening and supported at one end thereof for pivotal motion in the proximity of the opposite ends of the insertion opening such that the other ends thereof are spaced away from each other to load the disk; and means (318, 324) causing the pair of front arms to move toward each other; and a pair of link arms (33, 34, 34A) disposed in a substantially symmetrical relationship with each other around the virtual straight line and in a crossing relationship with each other and supported at one end thereof for pivotal motion such that the other ends thereof are spaced away from each other to synchronize the pivotal motion of the front arm with which one of said link arms is engaged and the pivotal motion of the front arm with which the other of said link arms is engaged with each other; wherein: at least one of said link arms has a restricting portion adapted to abut with an end edge of the disk loaded to the loaded position to restrict the movement of the disk to a leading end side in the loading direction; said front arms each having a grasping member (312, 313, 322, 323), the grasping members being adapted to abut with an end edge of the disk to grasp the disk; and the grasping member of at least one of said front arms is a driven roller for transporting the disk. an apparatus body having an insertion opening corresponding to a diametrical dimension of the disk and having the loaded position therein to which the disk inserted into the insertion opening is to be positioned; a pair of front arms (31, 32) disposed in a substantially symmetrical relationship with each other with respect to a virtual straight line extending along the loading direction of the disk and passing a substantially central position of the insertion opening and supported at one end thereof for pivotal motion in the proximity of the opposite ends of the insertion opening such that the other ends thereof are spaced away from each other to load the disk; and means (318, 324) causing the pair of front arms to move toward each other; and a pair of link arms (33, 34, 34A) disposed in a substantially symmetrical relationship with each other around the virtual straight line and in a crossing relationship with each other and supported at one end thereof for pivotal motion such that the other ends thereof are spaced away from each other to synchronize the pivotal motion of the front arm with which one of said link arms is engaged and the pivotal motion of the front arm with which the other of said link arms is engaged with each other; wherein: at least one of said link arms has a restricting portion adapted to abut with an end edge of the disk loaded to the loaded position to restrict the movement of the disk to a leading end side in the loading direction; said front arms each having a grasping member (312, 313, 322, 323), the grasping members being adapted to abut with an end edge of the disk to grasp the disk; and the grasping member of at least one of said front arms is a driven roller for transporting the disk. at least one of said link arms has a restricting portion adapted to abut with an end edge of the disk loaded to the loaded position to restrict the movement of the disk to a leading end side in the loading direction; said front arms each having a grasping member (312, 313, 322, 323), the grasping members being adapted to abut with an end edge of the disk to grasp the disk; and the grasping member of at least one of said front arms is a driven roller for transporting the disk.