This study seeks to examine the relationship between school happiness and teachers' organizational trust and to determine whether school happiness predicts teachers' organizational trust. In this context, the correlational survey method was used in the research. The population of the research consists of 1802 teachers working in all public school levels in Giresun city center in the 2021-2022 academic year. The sample consists of 363 teachers selected from this population. For data collection, the "School Happiness Scale" and the "Organizational Trust Scale" were used. In this research, correlation analysis was employed to determine whether school happiness and its sub-scales are associated with teachers' organizational trust. To determine whether school happiness predicts teachers' perceived organizational trust, a linear regression analysis was used and a multiple linear regression analysis was used to find out the predictive power of school happiness sub-scales on teachers' perceived organizational trust. Research findings indicated that there was a high-level and statistically significant relationship between school happiness and teachers' organizational trust. Similarly, school happiness was found to predict teachers' organizational trust in a statistically significant way.