We examined the ability of the Minnesota Multiphasic Personality Inventory-2 Restructured Form (MMPI-2-RF; Ben-Porath & Tellegen, 2008) substantive scales to predict Drug Court treatment completion in a sample of individuals identified as being at risk for failure to complete the program. Higher scores on MMPI-2-RF scales Behavior/Externalizing Dysfunction, Antisocial Behavior, Aberrant Experiences, Juvenile Conduct Problems, Aggression, and Disconstraint-Revised were associated with increased risk for failure to complete treatment. These results are consistent with previous findings (O'Reilly, 2007; Sellbom, Ben-Porath, Baum, Erez, & Gregory, 2008) regarding treatment completion. Gender was also found to be associated with treatment completion, with females being more likely to complete the Drug Court program than males. Zero-order correlations and relative risk analyses indicated that the MMPI-2-RF can provide useful information regarding risk factors for failure to complete Drug Court treatment. Limitations and future directions are discussed. (Contains 2 tables.)