A disk reproducing apparatus comprises a disk reproducing unit configured to reproduce a disk having a recording management area in which an RZone having navigation data is allocated at a head thereof, a plurality of titles are then recorded in a mode in which there is allocated an RZone having presentation data managed by the navigation data, and position information on the RZone is recorded, and a reproduction control unit configured to store position information on the RZone having the navigation data as information indicating a start position of the title and to use the stored information as a title reproduction start position.