An illumination apparatus for a vehicle includes a projector configured to project an image of visible light; an obstacle detection apparatus configured to detect an obstacle; and a processing apparatus configured to predict a travel area of the vehicle after a predetermined time or a predetermined distance of travel, project a first image with the projector in the predicted travel area upon no obstacle in the predicted travel area being detected by the obstacle detection apparatus, and project a second image, which is different from the first image, with the projector in the predicted travel area upon the obstacle in the predicted travel area being detected by the obstacle detection apparatus.