Background: Bioethics is fundamental in surgery. Knowledge must be universal. Objective: To evaluate bioethical knowledge in surgery associates and residents of Coahuila. Method: Cross-sectional study. Anonymous survey through social networks and by telephone. Results: 67 participants (47 enrolled, 20 residents); 41.8% received bioethics talk or course in residency, 29.9% have seen or performed a medical procedure without absolute indication, 34.3% have influenced a patient in their treatment, even when the patient refused to do so, 25.4% performed a procedure without explaining the risks, benefits, and alternatives. Of the questions on bioethics