OBJECTIVE: To describe the epidemiological profile of patients with chronic renal failure on hemodialysis in a municipality of Piauí. METHODS: We developed a cross-sectional study of quantitative approach with a sample of 144 patients. RESULTS: The results showed that 68.8% of respondents were male, 36.1% were aged between 51 and 60 years, 36.8% were black and 78.5% were farmers. Regarding family history, 80.7%...