Abstract: This research is aimed at finding out the mediating role of distributive justice between personality and teachers affective organizational commitment (AOC). Were teachers AOC affected directly or indirectly by personality and distributive justice was the problem of this research. A causal survey method has been applied by involving 135 junior school teachers. There were three valid and reliable instruments have been developed for measuring those three variables. Correlation and path analysis have been used to analyze data. Research results showed that (1) There was a direct positive effect of personality on affective organizational commitment; (2) There was a direct positive effect of distributive justice on affective organizational commitment; (3) There was a direct positive effect of personality on distributive justice; (4) There was an indirect effect personality on affective organizational commitment through distributive justice. Therefore the role of distributive justice as a mediator could not be neglected.