Purpose: The objective of this study is to determine the importance of supplementary medical ethics course for resident physicians. In this study, we assessed the current state of their knowledge of medical ethics and aimed to improve and deepen their understanding of clinical scenarios to increase their awareness of the link between the practice of medicine and ethical issues. Methods: The course was held for groups of 10-12 people for 3 days a week for a total of 6 hours. Tests (...) given prior to and following completion of the course were used to assess the effectiveness of a medical ethics training course in which 120 resident physicians completed. The evaluation was made on the basis of the same pre-and post-tests (14 scenarios) and direct observation of participants. Result and Discussion: The average age was 28.23 ± 4.08 and 25% were female and 75% were male. Of the participants, 68.3% were training to be internists, 24.2% were training to be surgeons, and 7.5% were training in laboratory medicine. There was a significant statistical difference between the mean total scores of both tests (p=0.00). After completing the course, residents took into account the medical ethical principles while discussing ethical decisions. Conclusion: After finishing the course, participants defended their responses in regard to issues of medical ethics more carefully and articulated their thoughts more clearly. Our experience demonstrated that the trainees benefited from a structured curriculum in medical ethics. We believe that the development and implementation of our course may serve as a case study for training resident physicians in medical ethics. (shrink)