An image inspection apparatus includes: an image forming apparatus that is capable of forming an image of a plurality of colors and includes: an inspector that compares a scanned image obtained by scanning a surface of a sheet on which a job image and a marker image are formed with a reference image, and detects a defect in the scanned image, wherein a color of the marker image is a color having the lowest visibility, and the inspector extracts feature points of the job image and of the marker image from a scanned image of a color corresponding to a complementary color of the color having the lowest visibility included in the scanned image, and determines a position of the scanned image corresponding to the reference image based on the extracted feature points and feature points of the job image and of the marker image in the reference image.