The aim of this research is to reveal the effect of organizational support perception of teachers on the organizational trust perception of their schools who work in the primary schools. The research is a descriptive scanning model type of research. The universe of the research consists of 1637 teachers who work in the town of Kocaeli of Izmit city. The sampling of the research consists of 680 teachers working in 12 schools who have been chosen randomly. The data of the research has been collected with the organizational support perception and organizational trust scales. In the research the hypothesis which has been developed according to the institutional information and findings has been tested. In order to test the hypothesis correlation and regression analyses have been conducted. At the end of the research a highly positive (r = 0.75) relation between the organizational support perception and organizational trust perception has been determined. It has been discovered that organizational support perception is an effective variable in the regression of the organizational trust in a positive way.