Parents are the primary source of support for their children and can become principal interventionists for preventing and treating their child's challenging behavior. Yet, providing adequate and adapted training for culturally diverse families can be difficult due to the increase of international migration and the diversity of languages spoken worldwide. This systematic review and meta-analysis evaluated 13 studies that implemented training for caregivers with limited proficiency in the majority language. Overall, the results suggested a moderate-small treatment effects on positive and negative parenting practices. The results also indicated moderate-small treatment effects on challenging behaviors exhibited by both individuals with developmental disabilities and typically developmental. Findings are discussed in terms of strategies used and recommendations for future research and practice.