The purpose of this study is to identify relevant factors in ethical climate of Korean nurses by systematically reviewing previous studies. Methods: The studies were searched through COre DB recommended by NECA (National Evidence-based Healthcare Collaborating Agency), which includes KoreaMed, KMBASE, KISS, NDSL, KISTI, MEDLINE, CINAHL, Cochrane, EMBASE. We analyzed studies published by December 2019. The searched studies were organized using Zotero program and Excel. The Checklist for Analytical Cross Sectional Studies was used to assess the quality of the studies.Results: Ten studies were carefully selected according to inclusion criteria for systematic review. These were 9 quantitative studies and 1 mixed study. The ethical climate factors highly recognized by Korean nurses were laws and codes, company rules, and social responsibility. The variables related to ethical climate were more commonly found in job and organizational areas than in personal and nursing areas. The ethical climate factors were positively correlated with variables such as organizational commitment, job satisfaction, and supervisor trust, while negatively correlated with job stress, intention to quit, and moral distress. Conclusions: The results of this study indicate that the nurse's ethical climate is important in areas such as job and organization, individual competency, and quality of nursing in Korea. Nursing managers should try encourage ethical climate related to positive variables and block ethical climate related to negative variables.