Student-teacher relationship (STR) quality during the early school years has important implications for student adjustment and outcomes. Studies with typically developing (TD) children have identified links between parent behaviors and STRs, but these connections remain unexplored for children with autism spectrum disorder (ASD). The present study investigated relationships between observed parent behaviors during a shared literacy task and STRs one year later for 117 children (ages 4-7) with ASD. Children whose parents displayed more intrusiveness had poorer-quality STRs. Further, parent intrusiveness mediated the predictive relationship between child spoken language skills and STR quality. These results suggest that parent intrusiveness plays an important role in the development of STRs for young children with ASD. Implications for intervention and research are discussed.