Background: Since the increasingly complex structure of health care services brings many ethical problems, it is important to use different instructional technologies in the ethical education of future nurses. Aim: The aim of this study was to determine the effect of role play prepared with video support on ethical decision-making and motivation levels of nursing students. Research design: A quasi-experimental study with pretest-posttest design. Participants and research context: The research was conducted in the Nursing Department of a University located in (...) Istanbul, Turkey between October 15 and November 15, 2024. The sample of the research consisted of 3rd year nursing students. Data were collected using the Descriptive Characteristics Form, the Nursing Dilemma Test, and the Instructional Material Motivation Scale for Single-Use. Ethical considerations: Permission was obtained from Bezmialem Vakif University Non-Interventional Ethical Research Committee and the institution where the study was conducted for the implementation of the research. Written and verbal consent was obtained from all participants in accordance with the Helsinki Declaration. Findings: While there was no difference between the students’ Ethical Dilemma Test Principled Thinking pre-test and post-test scores, their Practical Consideration ( p =.005) and motivation levels ( p =.037) post-test scores were found to be higher. There was a weak but significant negative correlation between academic achievement and pre-test teaching material motivation levels (r = −0.375, p =.041). Discussion: The use of different teaching methods and techniques in ethics education in nursing is important for future nurses to find more practical solutions to the ethical problems they will encounter during patient care. Conclusion: The results of the study indicate that the use of video-supported role play can be effective in teaching ethics courses in nursing education. (shrink)