Assessing the self-efficacy beliefs of Iranian nurses in coping with occupational stressors requires to have a reliable tool. This study aims to assess the validity and reliability of the short form of Occupational Coping Self-Efficacy for Nurses (OCSE-N) Scale for Iranian nurses. Methods: This is a methodological study. Participants were 151 nurses who were randomly selected from among those working in oncology wards of hospitals affiliated to Tehran University of Medical Sciences in 2021. The

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... nurses completed the short form of OCSE-N and the Coping Inventory for Stressful Situations- Short Form (CISS-SF). This study employed exploratory factor analysis and Confirmatory Factor Analysis (CFA) to examine the factor structure of the Persian OCSE-N. The reliability was assessed by calculating Cronbach's alpha coefficients. The data were analyzed in AMOS and SPSS software v. 26. Results: The results of Principal Component Analysis by the Promax rotation and CFA showed that the Persian OCSE-N had two factors: 1) Coping self-efficacy to cope with the relational burden and 2) coping self-efficacy to cope with occupational burden. The correlation between subscales of OCSE-N and CISS-SF confirmed the convergent validity of the Persian OCSE-N. Cronbach's alpha coefficients for factors 1 and 2 were reported 0.75 and 0.77, respectively. Conclusion: The Persian OCSE-N is a valid and reliable tool to measure the perceived self-efficacy in coping with stressful situations among Iranian nurses.