Breast cancer is the most frequently diagnosed cancer in women. Early detection of breast cancer is known to increase survival rates significantly after diagnosis. This research was carried out to determine the level of breast cancer risk among primary healthcare nurses and their belief in breast cancer screening. In this descriptive research, the data were collected in face-to-face interviews with the participants. The researchers contacted all primary healthcare nurses currently working in the province. The data collection tools included a questionnaire form on sociodemographic characteristics, breast cancer risk assessment form, and Champion's Health Belief Model Scale (CHBMS) for breast cancer screening. In data analysis, descriptive statistics, t test, and analysis of variance (ANOVA) were used. The mean age of nurses was 35 +/- 3.6. The mean score for the breast cancer risk assessment form was calculated as 82.9 +/- 18.7. The subscale scores for the CHBMS for breast cancer screening were as follows: susceptibility 7.3 +/- 1.8, seriousness 19.5 +/- 4.1, benefits of breast self-exam 15.5 +/- 2.6, barriers to breast self-exam 15.1 +/- 2.8, self-efficacy 40.3 +/- 7.0, and motivation 19.5 +/- 4.1. The risk of breast cancer was found to be low in the study group. The analysis of the subscale scores for the CHBMS for breast cancer screening revealed that nurses had a below-average susceptibility perception, a somewhat lower perception of seriousness, an above-average mean score for perceived benefits, a moderate barrier perception, a relatively high perceived self-efficacy, and motivation above average.