The present technology relates to an information processing device, a display device, an information processing method, a program, and an information processing system that enable the determination of a visual field of attention in a case where an image of content in which the visual field can be freely changed is exhibited to a user. An information processing device according to one aspect of the present technology receives viewing history information including a history of a display range of each video content while being viewed, which viewing history information is transmitted from a plurality of display devices each configured to display an image of the video content in which the display range is switched within a range of the entire image by following a movement of a user, and identifies, on the basis of the history of the display range of the image of the video content at the predetermined display device, a predetermined display range of the video content within a predetermined time period thereof as a range of attention. The present technology can be applied to a device that provides content to be reproduced by an HMD.