AbstractBackground & Aim: Radiographic tests are used to diagnose various types of diseases, but they are potentially dangerous for patients and radiographers who work in radiology departments. These risks are minimized if the protective measures are observed. The purpose of this study was to determine the level of knowledge, attitude and the performance of radiographers working in the radiological departments of Sanandaj city with regard to radiation protection guidelines.Methods & Materials: This cross-sectional descriptive-analytical study was carried out using a 30-item questionnaire completed by all radiographers working in Radiology Centers in Sanandaj. The questionnaire included demographic information and questions about the level of knowledge, attitude and performance of... radiologists on radiation protection. The data of the questionnaire was analyzed using SPSS18 and descriptive statistics including absolute frequency, relative frequency, mean, standard deviation, range, knowledge, performance, and attitude of the radiologists with gender and degree, age group and work experience.(#br)Results: The rate of participation of radiographers was 94.16%, and the mean and standard deviation of knowledge, attitude and practice regarding radiation protection were 20.65±2.725, 16.59± 2.09, 592.22, 11.43±1. The mean and standard deviation of age and work experience were 34.19±7, 158, 9.96±931.3, respectively.(#br)Conclusion: The results of this study showed that with increasing age and reduction of educational degree, the knowledge and awareness of the radiographers with regard to radiation protection was reduced and also there was a direct relation between the knowledge and awareness of the radiographers and their performance in the field of radiation protection.