This session explores the clinical and policy landscape of providing medications for opioid use disorder (MOUD) in jails, prisons, and reentry settings. Dr. Arthur Robin Williams and Dr. Peter Treitler review recent research on the effectiveness of MOUD in reducing overdose and improving post-release treatment engagement. The session highlights key differences among methadone, buprenorphine, and extended-release naltrexone, including regulatory and logistical considerations unique to correctional environments. Learners will examine policy updates, case-based examples, and implementation strategies that support evidence-based treatment access. The session also addresses interdisciplinary collaboration, diversion concerns, and continuity of care across incarceration and reentry.