As autism spectrum disorder (ASD) diagnoses continue to rise, traditional support services are unable to meet the demand. Parents are increasingly turning to online resources, which vary across a continuum of interactivity from passive online information seeking to highly interactive eHealth models, allowing engagement for parents in innovative ways. Although online resources may provide necessary opportunities for information dissemination, outreach, intervention, and support systems, there is cause for reservation. The current study summarizes results of a systematic review (N = 27 articles) of the evidence surrounding parent use of online resources. Recommendations for researchers to better leverage online tools for the advancement of service provision and child outcomes are discussed.