Background: This study investigated the experience of 23 incarcerated male adolescents who participated in an adapted 10‐week mindfulness‐based intervention.Method: Participants completed semi‐structured interviews immediately following the final class of the treatment intervention. A six‐step thematic content analysis was used to identify major themes from the transcribed semi‐structured interviews. Results: Four major clusters of themes were identified: increase in subjective well‐being, increase in self‐regulation, increase in awareness, and accepting attitude toward the treatment intervention. Conclusion: Results suggest that adapted mindfulness‐based interventions are feasible as treatments for incarcerated youth and have promising potential. Clinical implications are discussed.