The aim of this study was to assess the relationship between teachers’ organizational commitment, job satisfaction and whistleblowing behaviors and to evaluate their contribution to sustainability in education. The study consisted of a total of 4108 teachers who worked at primary and secondary schools during the 2018–2019 academic year in the Çankaya district of the Ankara province. The sample comprised of 601 teachers who were selected through a simple random sampling method. The organizational Commitment Scale (OCS), the Job Satisfaction Scale (JSS) and the Whistleblowing Scale were used as the data collection tools in the study. For the analysis of the data, SPSS 18.0 and LISREL 8.80 statistical package programs were used. Descriptive statistics on variables were performed on SPSS program and the testing of the model in which the effects of job satisfaction on whistleblowing and organizational commitment on job satisfaction were studied was carried out using path analysis technic in LISREL 8.80 program. According to the results of the study, there was a moderate level of positive and significant relationship between organizational commitment and job satisfaction. There was also a moderate level of positive and significant relationship between organizational commitment and whistleblowing behaviour. A low level of negative significant relationship was found between job satisfaction and whistleblowing. As the teachers’ organizational commitment increased, their job satisfaction and whistleblowing behaviours also increased. However, as their job satisfaction levels increased, their whistleblowing behaviours decreased. In this regard, it can be concluded that sustainability in educational institutions can be ensured by increasing the level of organizational commitment.