The eastern Democratic Republic of Congo (DRC) has faced dual burdens of poor mental health and heightened levels of violence against women and children within the home. Interventions addressing family violence prevention may offer a path to mitigate mental distress within the eastern DRC. This exploratory analysis uses data from a pilot cluster randomized controlled trial conducted in North Kivu, DRC, assessing the impact of Safe at Home, a violence prevention intervention. Mental health was assessed at endline using the Patient Health Questionnaire-4. Statistical analyses employed multilevel linear regression. Assuming successful randomization, impact of the Safe at Home intervention on mental health differed by participant gender. Women enrolled in the Safe at Home intervention reported statistically significant decreases in mental distress symptoms [β (95%CI)=-1.01 (-1.85, -0.17)], whereas men enrolled in Safe at Home had similar scores in mental distress to the control group [β (95%CI)=-0.12 (-1.32, 1.06)]. Ultimately, this exploratory analysis provides evidence of the potential for a family violence prevention model to improve women's mental health in a low-resource, conflict-affected setting, although further research is needed to understand the impact on men's mental health.