The effect of ethical leadership behaviors of school administrators on teachers' subjective well-being and job satisfaction was examined in this research. The sample of the research consisted of 545 teachers working in public schools in Mardin province, identified by the simple random sampling method. Correlational survey model, one of the quantitative research methods, was used in the research. The research data was collected using “Ethical Leadership Scale”, “Teacher Subjective Well-Being Scale”, and “Job Satisfaction Scale”. Descriptive statistical analyses, Pearson Correlation Analysis, and Simple Linear Regression Analysis were applied in the analysis of the data. As a result of the research, it was found out that according to the teacher perceptions, school administrators' levels of ethical leadership behaviors and teachers' subjective well-being and job satisfaction levels were high. Besides, it was observed that there was a positive and significant relationship between the ethical leadership behaviors of school administrators and the teachers' subjective wellbeing and job satisfaction in educational organizations. It was also concluded that ethical leadership was a significant predictor of teachers' subjective well-being and job satisfaction. The results of the research were discussed in the light of the relevant literature and then recommendations were developed for researchers and practitioners.