Abstract
OBJECTIVES: to analyze the knowledge of Primary Health Care nurses regarding Forensic Nursing competencies before and after an educational intervention. METHODS: a quasi-experimental, before-and-after study was conducted with 12 professionals from the southern region of Minas Gerais between March and August 2023. The intervention was developed using the Problematization Methodology, and knowledge was assessed using an instrument developed by the researchers. The analysis was performed using descriptive statistics and Fisher's exact test. RESULTS: an increase in knowledge was observed in categories related to violence, crime, legislation, ethics, mental disorders, and disaster response. The training improved identification and intervention in various forms of violence, although gaps remained in topics such as forensic patient care and evidence preservation. CONCLUSIONS: continuing education is necessary to enhance knowledge in critical areas of Forensic Nursing practice.