The purpose of this study is to investigate the mediating effects of ethical culture and psychological safety on the relationship between ethical leadership and teachers' voice behavior. The sample consists of 342 teachers randomly selected from 25 primary and secondary schools. Four different instruments are used in this study. The scales have been translated into Turkish using a translation/back-translation method. All scales have been adapted to an educational context, and their validity and reliability have been examined. Pearson's correlation coefficient and regression analysis are used for analyzing the data. Ethical leadership is found to positively relate to teachers' voice behavior. This relationship is mediated by ethical culture and psychological safety. Theoretical and practical implications are discussed and future research possibilities have also been suggested.