Mental health encompasses the emotional, psychological, and social dimensions that influence decision-making, relationships, and the ability to navigate everyday environments. Among police first responders who are the initial law enforcement personnel who arrive at emergency scenes to secure areas, assess risks, and provide immediate aid before specialized teams arrive, mental health challenges are particularly pronounced due to disproportionate exposure to traumatic events, including violence, accidents, and human suffering. In regions plagued by conflict and insecurity, such as Benue State, Nigeria, these officers face chronic occupational stressors that significantly elevate risks for mental health disorders, including post-traumatic stress disorder (PTSD), depression, and anxiety. This paper adopted the cross-sectional study to examine the influence of social support on mental health among 365 police first responders in Benue State, Nigeria. Data were collected using two validated instruments: The Mental Health Inventory-38 (MHI-38) and the social support subscale of the Job Demand-Control Questionnaire, which assessed levels of support from friends and family members. Multiple linear regression analysis was employed to test the hypothesis, revealing a significant positive influence of social support on mental health among police first responders in Benue State, Nigeria (R² = .642, F(2, 362) = 161.087, P < .050), with social support emerging as a positive predictor of mental health (β = .155, t = 1.965, P = .050). These findings highlight the protective role of social support in high-risk occupational environments and advocate for peer-led interventions to enhance resilience among police first responders. Limitations of the study include potential self-report bias and the cross-sectional design. Future research should explore longitudinal methods to better understand the long-term dynamics of social support and mental health in this population.