Sleep problems are common in children with autism spectrum disorder (ASD), with potential repercussions on neurobehavioral functioning exacerbating socio-communicative impairments and aggressive behaviors. Parent reports are the most used method to assess sleep in pediatric populations and a modified 23-item of Children's Sleep Habits Questionnaire (CSHQ) for ASD has been proposed in the United States. The generalizability of the CSHQ for ASD has yet to be validated across countries, including Italy. To extend the CSHQ applicability to Italian youth with ASD, we back-translated to Italian and revised the 23-item CSHQ, validating its dimensional structure in a sample of children and adolescents with ASD using Explorative Graph Analysis. In addition, we compared the revised scale scores of the ASD group with a typically developing (TD) group. The revised Italian version of the CSHQ (CSHQ-r) consisted of a 15-item tool with a four-dimension structure (Sleep initiation/duration, Sleep anxiety/Co-sleeping, Night awakenings/Parasomnias, and Daytime alertness) with good structural stability. Group comparison indicated significantly higher scores in the ASD group than the TD group, suggesting greater prevalence of sleep disturbances in ASD. The four-dimensional CSHQ-r may represent a useful screening tool to assess sleep disorders in Italian children and adolescents with ASD, with potential implications for clinical practice.