An image display apparatus includes a generation unit and a display unit. The generation unit is configured to generate display images one by one from pieces of image data. The display unit is configured to display the display images generated by the generation unit as a list of the pieces of image data. Before generation of a first display image which the generation unit has started to generate using first image data is completed, the generation unit starts to generate a second display image using second image data, according to a predetermined condition.