The study sought to identify the relationship between principalÍs leadership style and school climate in Katsina state Technical Colleges. One research question and one hypothesis guided the study. The study adopted a correlational research design. The area for the study was Katsina State. Therefore, all the six technical colleges from the state were used for the study. The population for the study was 3886 subjects. This consisted of 3080 students, 800 teachers and 6 principals. Stratified random sampling in accordance with the three senatorial districts of the state was used to select a sample of 354 students, 266 teachers and 3 principals totalling 623 subjects for the study. The instruments for data collection were a 30 items Leadership Style Questionnaire (LSQ) and 40 items School Climate Questionnaire (SCQ). Both questionnaires were developed by the researcher. Data collected using these instruments were analysed using SPSS and Pearson Product Moment Correlation was the statistical tool used to determine the relationship between the variables under study while t-test analysis was used to test the hypothesis. The findings revealed a very high, significant and positive relationship between principalÍs leadership style and school climate in Katsina state Technical Colleges. This means that the principalÍs leadership style goes with positive school climate. It was concluded based on this finding that principalÍs leadership style improves the physical, social,affective and academic school climates. It was recommended that: (1) Workshops and seminars should be organised by Katsina State Science and Technical Education Board to create awareness among the principals in Katsina state Technical Colleges on the impact of their leadership style on their school climates; and (2) The findings of this study should be used as a yardstick for promoting or rewarding the performance of the principals in Katsina State Technical Colleges.