This study aimed to (1) develop a version of the cognitive rehearsal program that is suitable for cyberbullying and (2) apply the m-learning method to evaluate its effectiveness among head nurses. This study was conducted in July 2021 and comprised 69 South Korean university hospital head nurses. It was evaluated using a nonequivalent control group pretest-posttest and a quasi-experimental design. The program was developed using the Analysis, Design, Development, Implementation, and Evaluation (ADDIE) step process, consisting of 10 scenarios. Variables with proven reliability were used in the program effect measurement. The differences between the experimental and control groups were examined using an independent t-test (perception) or the Mann-Whitney U test (symptom experience, knowledge, and turnover intention). The program positively affected and improved head nurses' knowledge and perception of workplace cyberbullying; however, it elevated their symptom experience and had no immediate impact on turnover intention. The developed program could be applied as a valuable educational strategy in the nursing field. Head nurses act as intermediaries between individuals and the organization. Therefore, they must respond with in-depth knowledge and perceptions of cyberbullying to fulfill their responsibilities of identifying, mediating, and managing cyberbullying among hospital team members.