Abstract Background Breast cancer is the leading cancer among women worldwide. Early detection through mammography screening improves prognosis and enhances survival rate for this disease. The aim of this study was to identify the factors associated with mammography screening utilization among women attending primary healthcare centers. Methods A cross-sectional study was conducted in four primary healthcare centers in Monastir governorate in October 2023 using a pre-tested questionnaire. Women aged over 45 years-old were included as they were the target group in the breast cancer screening strategy. Univariate then multivariate analyses were performed in order to identify the factors associated with mammography screening utilization. Data was analyzed by SPSS 21.0. Results A total of 192 women were included in the study with a mean age of 56.7±8.8 years-old. Among them, 79.7 % (n = 153) were married and 51.6% (n = 98) had three children and less. A total of 55.3 % (n = 94) had a primary education level. Regarding participants’ practices of breast cancer screening, 35% of our participants have had mammogram. Univariate analysis showed that the knowledge about breast cancer symptoms (p = 0.015), practicing Breast self-examination (BSE) (p = 0.002), being aware about mammography (p = 0.001) and the recommended age of the screening at 45 years-old (p = 0.001) were significantly associated with adherence to breast cancer screening. Multivariate analysis revealed that practicing BSE (ORa=2.60 [95%CI: 1.22-5.55] and knowing the recommended age of mammography screening (ORa=2.28 [95%CI: 1.17-4.45] were significant (P < 0.05) predictors of mammography screening utilization. Conclusions Mammography screening rate is low. This study had provided some informations about factors influencing mammography screening. Policymakers and public health practitioners should consider the identified factors when developing intervention programs to improve breast cancer screening. Key messages • There is a need to conduct education sessions in schools to raise awareness about breast cancer screening at an early age. • Social media can be a tool for health education on mammography screening.