Purpose: The purpose of this study was to identify moderating and mediating effects of social support in the relationship between work-family conflict, job satisfaction and turnover intention among married women nurses. Methods: The sample for this study consisted of 225 married female nurses from two hospitals located in Seoul. Data were collected through structured questionnaires and analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficients and hierarchical multiple regression with the SPSS 21.0 program. Results: (a) Social support of married female nurses had significant moderating and mediating effects between work-family conflict and job satisfaction. (b) Social support of married female nurses had significant moderating and mediating effects between work-family conflict and turnover intention. Conclusion: The results of the study indicate that social support is an important factor in work-family conflict, job satisfaction and turnover intention among married female nurses. Supervisor support is important to married nurses as social support as it is controlled by the organization. Therefore, supportive relationships based on mutual respect between supervisors and nurses are necessary for a creative organizational atmosphere and system.