<p>Correctional officers face considerable occupational stress, which adversely impacts their psychological functioning. Wellbeing interventions such as cognitive behavioral therapy (CBT), mindfulness-based interventions (MBIs), critical incident stress management (CISM), and exercise have been used to mitigate these effects. This study conducted a systematic review and meta-analysis to assess the effectiveness of these interventions. A systematic review identified studies examining the psychological outcomes of correctional officers. A meta-analysis was performed on seven studies that met inclusion criteria. Outcomes included stress, anxiety, depression, post-traumatic stress symptoms, and well-being. CBT demonstrated significant reductions in stress, anxiety, and PTSD in four of six studies, though one study reported adverse effects. MBIs improved resilience, life satisfaction, and reduced burnout across three studies. CISM showed significant reductions in depression and PTSD, while exercise improved workplace attitudes and reduced hostility. The meta-analysis revealed MBIs outperformed CISM in post-treatment effectiveness, while CBT showed comparable outcomes to MBIs and CISM. While CBT and MBIs emerged as effective interventions, integrating diverse approaches may optimize psychological outcomes for correctional officers. Future research should explore long-term effects and implementation strategies.</p>