Motivational Interviewing (MI) is an evidence-based approach that provides probation and parole officers with specific skills to enhance their clients' motivations to change problematic behaviors. This study investigated the outcomes of MI training with probation and parole officers whose state agency required them to complete MI training. Results show that officers' MI skills, self-efficacy, and knowledge increased following training, with some exceptions. Recommendations from implementation science literature are provided for improving MI trainings.