The United States has one of the highest rates of incarceration in the world, with over 10 million people released from U.S. prisons and jails each year. People with histories of incarceration have high rates of posttraumatic stress disorder (PTSD), likely due, in part, to exposure to violence and abuse during incarceration. Untreated PTSD symptoms are associated with poor emotional regulation, impulsivity, substance use, and risk taking, all of which increase one's risk of recidivism. Despite the high rates of trauma exposure and PTSD in formerly incarcerated people, there are currently no evidence-based treatments for PTSD for people returning home from incarceration. One construct that may hold promise as a point of intervention for PTSD treatment in people with histories of incarceration is moral injury. Originally studied in combat veterans, moral injury refers to perpetrating or witnessing acts of transgression that violate deeply held moral beliefs and expectations. While it has been posited that experiences of moral injury are likely common in people with histories of incarceration, little research has examined experiences of moral injury as a potential population-specific risk factor for PTSD. Thus, the goal of this study is to collect survey data and conduct qualitative interviews with people who are formerly incarcerated to characterize experiences of incarceration-related moral injury. Preliminary analyses of survey data reveal high rates of reported moral injury exposure (94.5%) and a strong association between experiences of moral injury and severity of PTSD symptoms. Qualitative interviews are ongoing and will be analyzed with the goal of creating a conceptual framework of incarceration-related moral injury. Clinical implications and areas for future research will be discussed.