This meta-analysis examines the impact of parent interventions on outcomes for parents of children with ASD. A systematic review of the literature produced 37 studies that met inclusion criteria. Random-effects models revealed small but significant impacts of intervention on parental outcomes, primarily in parenting confidence and mental health. No improvements were observed in caregiving burden, family adjustment, physical health, or stress. Significant heterogeneity was observed; however, no moderation effects were detected for intervention or sample characteristics. These findings suggest parent interventions improve parenting confidence and, to a lesser degree, mental health. More work is needed to develop interventions that address a wider range of outcomes for parents of children with ASD. Limitations and implications for future research are discussed.