Research has suggested that during storybook reading children’s eye-gaze is primarily on the picture versus the text. Further research with written fast-mapping (FM) indicates that children acquire orthographic images during reading after minimal exposure. Limited research has been conducted on the FM or orthographic skills of children with autism spectrum disorder (ASD). The purpose was to investigate eye-gaze patterns of children with ASD to assess orthographic and written FM abilities. Twin 6-year-old boys with ASD and two 5- year-old typically developing children participated. Fast-mapping skills were assessed by presenting novel words and pictures on a computer. Eye-gaze patterns were analyzed using Tobii Studio 2.0.1 eye tracking software. Data was analyzed to determine eye-gaze patterns in relation to FM skills.