An image display apparatus includes a light output part that outputs modulated lights and a light scanning part that performs scanning with the modulated lights in first directions and second directions. Scanning with the respective modulated lights is performed only in ones of outward paths and return paths in the first directions, in an image plane, irradiated points of the modulated lights are arranged side by side in directions crossing the first directions, the scanning of the modulated lights is performed in the second directions for two scanning lines extending in the first directions at a time, and one of the irradiated points at a certain time is located in a position different from those of scanning tracks of the other.