Purpose. This quantitative study examined parent perceptions regarding augmentative and alternative communication (AAC) interventions for their children with autism to determine if, according to parent perceptions, a relationship existed between AAC and functional communication. Those faced with cognitive and developmental delays like autism face daily communication challenges, and they rely on AAC to supplement existing speech or replace speech that is not functional. Theoretical Framework. The theoretical framework for this study was based on the Competency, Opportunities, Driving Communication Forward, Engagement, and Skill Acquisition (CODES) framework developed by Janice Light to assist in monitoring the progress of an individual utilizing an AAC intervention. The CODES framework utilizes evidence-based practices to help prepare and map out the necessary support required for the development of the individual with complex communication needs. Methodology. Data was collected by SurveyMonkey, a web-based survey provider, via a 10-question, multiple-choice survey developed for parents with children, aged 4 to 17 years, with autism spectrum disorder or developmental disabilities who attend the Frostig Center. Parent perceptions regarding the efficacy of AAC interventions were examined. Of the 100 parents asked to participate in the survey, 32 completed the online version of the survey between March 8, 2017 and March 15, 2017. Findings and Conclusion. This study found that 46.88% of children with autism were reported by their parents as utilizing one or more AAC devices. Parent perceptions regarding AAC interventions were mixed. Parents indicated that the interventions were used for a variety of reasons, including making requests, beginning or engaging in conversation, asking questions, or engaging in recreation. Parents indicated noticeable improvements (91.67%) in their child's ability to communicate as a result of utilizing an AAC device, and slight to significant improvements in socialization (46.66%) and independence (73.33%). Recommendations. Further exploring the benefits of AAC interventions, if establishments in functional communication can be shown, will help provide clinicians and parents evidence-based intervention strategies to better improve health outcomes for children with communication deficit disorders like autism. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]