Since gender differences in the symptomatology of autism spectrum disorder (ASD) are not well understood, the current study examines the communicative skills of males and females with ASD. Narrative competence and internal state language (ISL) was investigated using narrations elicited by a wordless picture book. 11 girls and 11 boys with ASD and 11 typically developing girls were individually matched. Although results demonstrate largely comparable narrative skills across groups, the groups differed with respect to the size and use of ISL: Girls with ASD verbalized and motivated internal states more often than boys, and both groups with ASD fell behind typically developing children in production of affective words. Implications for the clinical presentation of males and females with ASD are discussed.