Purpose: The purpose of this study was to identify factors influencing nursing performance of nurses in long-term care hospitals. Methods: The participants were 200 nurses working in 14 long-term care hospitals in B and G cities. Data were collected from January 26 to April 30, 2015. SPSS/WIN 18.0 was used for analysis with t-test, ANOVA, Scheffé test, Pearson correlation coefficients and Stepwise multiple regression. Results: There was a significant correlation between nursing performance and self-leadership (r=.63, p<.001) and self-efficacy (r=.66, p<.001). In the multiple regression, self-efficacy (β=.40, p<.001), self-leadership (β=.33, p<.001) and position (β=.11, p= .039) were associated with nursing performance. These factors accounted for 49% of the total variance in nursing performance. Conclusion: Considering the results of this study, educational programs to improve self-efficacy and self-leadership should be developed and implemented in order to foster nursing performance in the nurses working in long-term care hospitals.