This study aims to examine the mediating role of organizational happiness in the relationship between teachers' work engagement and life satisfaction. The study involved 767 teachers, 557 women (73%) and 210 men (27%). Data from the study were collected using the Work Engagement Scale, the Organisational Happiness Scale, and the Life Satisfaction Scale. Descriptive statistics, Pearson product moment correlation coefficient, path analysis and bootstrapping procedure were used in the analysis of the data to test the significance of the mediating effect. As a result of the study, it was found that there is a significant positive relationship between work engagement, organizational happiness and life satisfaction. The bootstrapping result showed that organizational happiness has a partially mediating role in the relationship between work engagement and life satisfaction. It is thought that the results obtained can be used to increase the life satisfaction of teachers. In addition, it can be said that the results obtained from the research will be a guide for future studies.