Background: The overlap between justice system involvement and drug use is welldocumented. Justice-involved people who misuse opioids are at high risk for relapse and criminal recidivism. Criminal justice policymakers consider opioid-specific medication-assisted therapies (MATs) one approach for improving outcomes for this population. More research is needed that explores the impacts of opioid-specific MATs for justice-involved people.Objectives: This study sought to assess the effects of opioid-specific MAT for reducing the frequency and likelihood of criminal justice and overdose outcomes for current or formerly justice-involved individuals.