When designing and implementing evidence-based programs for children with an autism spectrum disorder, the intervention priorities of parents are important criteria. Although studies in developed countries have explored parents' intervention priorities, there is a paucity of this kind of research in developing countries. This research explores the intervention priorities of 207 Iranian parents for their children with autism in Tehran, the capital of Iran. Participants with children between 2 to 21 years of age were asked to rate their intervention priorities from among 10 main categories. In addition, correlations between children's difficulties and parental intervention priorities were examined. The results indicate that building social communication skills was the highest intervention priority for parents of Iranian children with autism, a contrast to typical current service provision in Iran. The results also substantiated that presence of social communication difficulties and challenging behaviors in children are typically correlated with parents' intervention priorities. 1. Introduction The intervention priorities of parentsof children with an Autism Spectrum Disorder (ASD) are important: understanding these and incorporating them into treatment and support programs is likely to increase parental acceptance, participation and satisfaction, and these factors are likely to lead to better outcomes for children. However, the priorities of parents in developing and developed countries may differ. This research seeks to understand the treatment priorities of parents in Iran, and to compare these with parental priorities reported in similar studies completed in developed countries. A secondary aim is exploring whether there is a correlation between parents' intervention priorities and their child's ability level. Autism Spectrum Disorders are neurodevelopmental disorders that can be diagnosed by documenting difficulties in social communication skills and the existence of repetitive and stereotypical behavior (American Psychiatric Association, 2013). The most recent research literature indicates that the prevalence of ASD is increasing in most countries (Hill, Zuckerman, & Fombonne, 2015; Pellicano, Dinsmore, & Charman, 2014). This increase in prevalence is not believed to reflect a rise in incidence, but is instead derived from increased awareness and availability of diagnostic services (Rice et al., 2012). In Iran, the first study about the prevalence of ASD reported a rate of 6.26 in 10,000 (Samadi, Mahmoodizadeh, & McConkey, 2012), but a more recent study indicates that prevalence has reached 95.2 in 10,000 (Samadi & McConkey, 2015). Parents and professionals try hard to find more effective and evidence-based interventions for their children or clients with ASDs