In this perspective, we argue that the regular use of diversity advisory boards in autism research will improve the inclusivity and participation of marginalized groups in autism research and intervention development. We define a diversity advisory board as a representative group of community members, scholars, policymakers, and area experts that specifically discuss and examine research and interventions for accurate representation and consideration of underrepresented and marginalized identities such as racial, gender, sexual minorities, and dis/abilities who are often excluded from the research process. We present three arguments for forming and integrating diversity advisory boards in autism research and intervention development. First, diversity advisory boards would encourage scholars and interventionists to be intentional in considering how their intervention will work for culturally, racially, gendered, and dis/ability diverse groups. Second, diversity advisory boards will lead to increased diverse samples of autistic participants if members of the board are incentivized to support recruitment efforts from their local communities and networks. Finally, the regular use of diversity advisory boards will improve the research-to-practice gap by including a wider range of community members in the early development and implementation of autism interventions. Recommended actions researchers could take to select, maintain, and meaningfully engage a diversity advisory board are included in this perspective.