Objective: To use meta-analytic techniques to evaluating the effectiveness of parent-child interaction therapy (PCIT) at reducing future physical abuse among physically abusive families. Methods: A systematic search identified six eligible studies. Outcomes of interest were physical abuse recurrence, child abuse potential, and parenting stress. Results: Parents receiving PCIT had significantly fewer physical abuse recurrences and significantly greater reductions on the Parenting Stress Index than parents in comparison groups. Reductions in child abuse potential were nonsignificant, although 95% confidence intervals suggest clinically meaningful treatment effects. The studies examining physical abuse recurrence had a medium treatment effect (g = 0.52), while results from pooled effect size estimates for child abuse potential (g = 0.31) and parenting stress (g = 0.35) were small. Conclusions: PCIT appears to be effective at reducing physical abuse recurrence and parenting stress for physically abusive families, with the largest treatment effects seen on long-term physical abuse recurrence. Applications to social work practice are discussed.