Structured risk assessment tools are widely used across the criminal justice systems in western countries. However, little research has been conducted to validate these tools in low and middle-income societies. The aim of this study was to validate a cost-efficient risk assessment tool, the Self-Appraisal Questionnaire (SAQ) in Uruguay, Latin America. The SAQ was administered to a sample of 333 adult male inmates in combination with data from the case file information at the Prison System and self-report. Results showed significant evidence of SAQ's score reliability (Cronbach alpha = .91) and concurrent validity with the Self-Report Psychopathy Scale Short Form (r = .62, p < .001). Furthermore, the SAQ showed satisfactory concurrent validity with official data and self-report data for recidivism (AUC = .71 and .75) and for violent recidivism (AUC = .76 and .77). Implications for future research in low and middle-income countries are discussed.