Abstract Background In recent decades, increasing social and health inequalities all over the world has highlighted the importance of social justice as a core nursing value. Therefore, proper education of nursing students is necessary for preparing them to comply with social justice in health systems. This study is aimed to identify the main factors for teaching the concept of social justice in the nursing curriculum. Method This is a qualitative study, in which the conventional content analysis approach was employed to analyze a sample of 13 participants selected using purposive sampling method. Semi-structured interviews were conducted to collect and analyze the data. Results Analysis of the interviews indicated that insufficient education content, incompetency of educators, and inappropriate education approaches made social justice a neglected component in the academic nursing education. These factors were the main sub-categories of the study and showed the negligence of social justice in academic nursing education. Conclusion Research findings revealed the weaknesses in teaching the concept of social justice in the nursing education. Accordingly, it is necessary to modify the content of nursing curriculum and education approaches in order to convey this core value. Since nursing educators act as role models for students, especially in practical and ethical areas, more attention should be paid to competency of nursing educators, specially training in the area of ethical ideology and social justice.