The aim of this research is to determine whether organizational trust plays a role in the effect of school administrators' leadership on teachers' job satisfaction. In the study conducted according to the ex post facto causal design, data from 2561 teachers working in Sanliurfa province were analyzed. Three structural equation models based on maximum likelihood estimation have been established to determine the effect of leadership on organizational trust and job satisfaction and to determine the mediator role of organizational trust. According to the results of the research, leadership indirectly affects job satisfaction through organizational trust. It has also been determined that school administrators exhibit adequate levels of leadership, teachers trust their organizations and have job satisfaction, leadership affects organizational trust at a very high level and organizational trust affects job satisfaction moderately. In the researches where leadership and job satisfaction are studied, it is suggested to include organizational trust. For increased job satisfaction of teachers through leadership, teachers should first trust their organizations.