Little is known about peer attitudes toward college students with autism spectrum disorder (ASD). Affective, behavioral, and cognitive attitudes toward vignette characters displaying behaviors characteristic of ASD were examined among 224 four-year university students who were randomly assigned to one of three labeling conditions for the primary vignette characters: high functioning autism (HFA), typical college student, or no label. Students in the HFA label condition reported more positive behavioral and cognitive attitudes toward the vignette characters than students in the no label condition. Male students and students with lower scores on the Broad Autism Phenotype Questionnaire reported more positive attitudes across study conditions. These experimental results suggest that knowledge of a diagnosis might improve attitudes toward college students with ASD.