Purpose: To investigate the validity and reliability of the Korean Version of the Assault Response Questionnaire (ARQ-K) measuringthe intensity of reaction to victimization of emergency nurses in Korea. Methods: An internal consistency reliability and constructvalidity using exploratory and confirmatory factor analysis were conducted using SPSS WIN (20.0) and AMOS (20.0). Survey datawere collected from 321 nurses who worked in 3 levels - wide regional emergency centers, regional emergency centers, appointedemergency centers - of emergency care facilities in Busan, Korea. Results: The Cronbach’s alpha values regarding internal consistencywere .77~.93 for the subscales of ARQ-K. Factor loadings of the 26 items on the four subscales ranged from .59 to .84. Thefour-subscale model was validated by confirmatory factor analysis ( χ 2/df=3.85, p qqqlt;.001, RMR=.06, GFI=.80, NFI=.81, TLI=.83,CFI=.85, RMSEA=.09). Conclusion: This study shows that the Korean Version of the Assault Response Questionnaire is a valid andreliable instrument to assess nurses’ reaction to victimization of emergency nurses in Korea.