In this study, it was aimed to determine the level of knowledge of Family Medicine residents about Chemical, Biological, Radiological and Nuclear (CBRN) events, their risk assessments and their thoughts on the roles that CBRN events can play in healthcare services. As a multi-center and cross-sectional analytical study, 444 family medicine residents at the national level were included in the study via an online survey application method. The data form included a total of 25 questions prepared to evaluate the sociodemographic information of the participants and their evaluation, awareness, knowledge level, approach to events and general opinions regarding CBRN event risks. 91.7% of physicians evaluated their knowledge level as "very little" or "little" and 95.7% evaluated their preparation level as "very little" or "little". 77.3% of physicians think that family physicians should have a role in CBRN incidents. For a possible CBRN event in the next 5 years, physicians predict biological events as the highest risk and nuclear events as the lowest risk. The rate of physicians who stated that they had previously received CBRN training was 17.8%, and the rate of those who participated in the CBRN drill was only 0.9%. While 89.9% of the participants wanted to receive training on health management in CBRN incidents; 80.2% want the training to be included in the specialty curriculum. While the participants' level of knowledge about the symptoms that may develop after a CBRN event is high, when asked about the awareness of CBRN risks around their institutions, 79.3% of physicians stated that they were not aware. It was determined that the level of knowledge, preparation, training, practice and awareness of family physicians regarding CBRN events was low. On the other hand, their willingness to receive training and their belief that they had a role in CBRN incidents were found to be high. According to the data of our study, we evaluate that there is a need for institutional structuring against CBRN risks, including primary health care services, and we suggest that CBRN training modules should be included in specialty curricula, starting from medical faculties.