Context: Self-efficacy and breast cancer fear were indicated as important determinants of mammography use. Objective: To determine the mammography adequacy of nurses and the fear of breast cancer and the affecting factors. Method: The descriptive study was performed with nurses working in two state hospital in Ordu, Turkey. Participants: The sample of the study included 168 nurses who volunteered to participate in the research. Interventions: A questionnaire form, Mammography Self-Efficacy Scale Turkish version and Champion Breast Cancer Fear Scale Turkish version were used for data collection. Main outcome measures: Descriptive statistics, t test, One Way ANOVA test, Mann-Whithey U test, Kruskal Wallis test, Pearson correlation test were used for evaluation of data. Results: Average age of nurses was 46.03±4.87 (range 40-64 age). 15.5% of them had your breast complaints. 94.6% of them had information on breast self-examination. It was determined that 70.8% of them done “irregularly” breast self-examination. In the last two years, 39.9% of them had mammography. Mammography self-efficacy scale scores were the highest in university graduated and the difference was statistically significant (p=.021). The average score of fear of breast cancer was lowest in the nurses who did’nt have a breast self examination (p=.014). Average score of mammography self efficacy scale was 43.92±5.38. Average score of breast cancer fear scale was 29.15±6.28. There were correlation between nurses’ mammography self-efficacy and breast cancer fear scale scores (r=.329, p=.000). Conclusion: Nurses had high breast cancer fear and high mammography self-efficacy. As the mammography self-efficacy of the nurses increased, their fear of breast cancer decreased. It is recommended that training programs be organized to increase the self efficacy of nurses.