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This research aims to examine how is the influence of principal leadership style and organization culture on the teacher’s working motivation at State (MAN) and Private Senior High School (MAS) in Dewantara Subdistrict. This research usesthe quantitative approach with descriptive method. The population in this research is the teachers who teach at State and Private Senior High School in Dewantara sub-district, the sample is 103 teachers. The data analysis method used in this research is multiple linear regressions. The result of the analysis based on the multiple linear regressions shows that Y=2.227 + 0.172x1 + 0.264x2. The result of the research shows that partially the principal leadership style variable has strong correlation toward the teachers’ working motivation at State and Private Senior High School in Dewantara sub-district in which the regression coefficient value is 0.264 and the test result simultaneously shows that the principal leadership style and the organization culture has correlation toward the teacher’s working motivation at State and Private Senior High School in Dewantara sub-district with Fscoreis 15. 815, while Ftableis on the significance level of α = 5 % is 3. 284. The Fscorestatistic test shows that Fscore>Ftable, with the probability level is 0.000.