ÖZETObjective: The aim of this study was to detect the level of knowledge on the attitude towards circumcision among mothers having sons aged 0-12 years. Material and Methods:Having a descriptive orientation, a series of face-to-face interviews with 420 mothers having sons aged 0-12 years was conducted using a questionnaire. Information on the socio-economic level, and knowledge, attitude and behavior regarding circumcision of the mothers were questioned.Results: 16.4% of the mothers were detected to have had their sons circumcised below the age of 3, 39.7% between 3-6 years and 43.6% at the age of 6 and above. It was found that the socio-economic status of the mothers affected their choices regarding the age and venue of circumcision (p<0.05). Regarding the complications that might occur during and after circumcision; 34.7% of the mothers thought of bleeding, 24.0% of them thought of infection, 23.3% thought of wrong operational practices and 17.7% of them replied that they had no idea. Conclusion:A group of mothers admitted to Ankara Education and Research Hospital were lacking in information about the complications that might occur during and after circumcision.