Purpose: This study aimed to investigate the educational needs of research ethics among nursing researchers. Methods: Convenience sample of 161 nursing professors and 262 master or doctoral nursing students participated in the study. Data was collected with self-reported questionnaire from June to August 2009, and analyzed with descriptive statistics using SPSS WIN (version 14.0). Results: Among 161 nursing professors, about 31.7% has educated nursing ethics in the postgraduate course. The most common course was nursing research or methodology (62.7%), and median education time was 2 hr. Areas that showed difficulty in understanding was the conflict of interest and plagiarism for professors and falsification and fabrication for graduate students. Average knowledge on the research ethics was 75.4 points for professors and 61.6 points for students based on the 100 points. Conclusion: Educational needs of research ethics among nursing professors and students in the postgraduate course was high. We recommend both basic and advanced research ethics educational programs for the nursing researchers. The basic course should be at least 6 hr and include various cases and something to discuss.