This study assessed the influence of Leadership Styles of Principals on Teachers' Commitment to Work in Secondary Schools in Kaduna State, Nigeria. For the purpose of this research, six research objectives were set to examine the influence of autocratic, democratic, transformational, transactional, situational and visionary leadership styles of principals on teachers' commitment to work in secondary schools in Kaduna State. The research questions and research hypotheses were also set based on the raised objectives of the study. Descriptive survey research design was adopted for the study and data were collected using researcher's constructed questionnaire which was validated by experts in Educational Administration and Planning. The population of the study involved 10,634 teachers, 529 principals and 229 Ministry of Education officials. Using purposive sampling technique, 4 Education Zones were selected in which more than 10% was used to arrive at 367 teachers, 55 principals and 45 Ministry of Education officials as samples for the study. From the pilot study test, the reliability coefficient was obtained at 0.78 using Cronbach's Alpha Statistical Technique. The data collected were presented by the use of frequency counts and percentages. The formulated hypotheses of the study were tested using Analysis of Variance at0.05 level of significance. The findings revealed among others that autocratic leadership approach of many principals through use of personal authority and dictatorial approach in decision making affected teachers' commitments to work in secondary schools in Kaduna State. Also, undemocratic leadership style of many principals through poor involvement of teachers, students and community in decision making and low sharing of responsibilities affected teachers' commitments to work in secondary schools in Kaduna State. Based on the findings, it was recommended among others that autocratic leadership style should not be prioritized by principals. They should not to use dictatorial approach in decision making process in secondary schools in Kaduna State and democratic leadership style should be prioritized by principals through sharing of managerial responsibilities among staff and involvement of all stakeholders in decision making in order to boost their participation in developmental activities in secondary schools in Kaduna State.