The threats of chemical, biological, radiological, and nuclear (CBRN) agents in industrial zones in industrial societies and in terrorist and similar acts today are known. Measures to be taken against these and updated information that should be known increase the importance of disaster management day by day. Damages originating from CBRN should be evaluated in terms of risk management and crisis management within disaster management. The aim of the study is to determine the level of CBRN awareness in healthcare workers, and the issues that need practice and training. The working group consisted of the health personnel of the International Medical Rescue Teams Association (IMRT-Association), a member of the National Medical Rescue Team (NMRT), and was managed in Kütahya. A CBRN awareness questionnaire was developed by the researchers, consisting of 43 questions, 20 of which were aimed at identifying the need for knowledge, 23 for practice and training. The internal consistency measure of the questionnaire was calculated as 0.816 with Cronbach's alpha. The total score was calculated by giving 2 points to correct answers and 1 point to incorrect answers in the answers given to the 'CBRN awareness questionnaire' information questions and propositions. The score that can be obtained in this part of the questionnaire varies between 20 and 40, and the knowledge level of those with a score of 35 or less was considered insufficient. The study group consisted of 108 people; The ages ranged from 20 to 57 years and the mean age (SD) was 32.53 (8.29) years. The percentage of correct answers ranged from 34-99%. The total scores obtained from the questionnaire ranged from 29 to 40, with a mean (SD) of 36.72(0.21) and a median of 37.0. According to the knowledge questions, 73.1% (79) of the study group had sufficient knowledge, while 26.9% (29) did not have sufficient knowledge. “Have you attended any training on CBRN?” Only one of the physicians, 46 (68.7%) of the nurses, and health officers, 8 (72.7%) of the emergency health workers, and 12 (54.5%) of the other health workers answered “yes” to the question. As a result of the study, it was concluded that since there is not enough information and awareness about disaster management and CBRN, it would be appropriate to give training to health workers in every occupational group.