Objective: This study examines the relationship between stress management practices and job performance among police personnel in Thrissur, Kerala, India. Methods: A cross-sectional survey design was employed with a sample of 287 police officers from various ranks in Thrissur district. Data were collected using standardized measures of perceived stress, stress management practices, and job performance, analyzed through descriptive statistics, correlation, and hierarchical regression. Results: Findings revealed that organizational stress (workload, administrative pressure) was more prevalent than operational stress among Thrissur police. Stress management practices—particularly peer support programs, mindfulness-based techniques, and recreational breaks—showed significant positive correlations with job performance dimensions (task performance, contextual performance, and adaptive performance). Peer support emerged as the strongest predictor (β = 0.342, p < 0.001), followed by mindfulness practices (β = 0.287, p < 0.01). Conclusion: Structured stress management interventions significantly enhance police job performance in the Indian context. Recommendations include establishing district-level wellness cells, integrating mindfulness training into academy curricula, and implementing peer support networks. This research contributes to the limited literature on police stress and performance in South Asian contexts.