To provide an image display system, in which a plurality of image display devices optimally display images corresponding to their positions, thus the plurality of image display devices are utilized effectively and in addition, display change by a user is easy by cooperation of the image display devices.

The image display system has the plurality of image display devices, equipped with mutually different identification numbers and radio communication functions and an image controller which detects the positions of each of the plurality of image display devices and transmits display image, corresponding to positional information of the image display devices to corresponding image display devices by radio, and the image display devices display the display images, corresponding to self positional information.