The study assessed the Role Performance of District Supervisors in the Management of Primary Schools in Katsina State, Nigeria. The study developed five objectives, which are set to examine the roles performance of District Supervisors on staff development, assess the roles performance of District supervisors on the provision of school instructional guidance, determine the roles performance of District Supervisors on school community relationship, identify the role performance of District Supervisors on awakening the school administrators on effective leadership and examine the role performance of District Supervisors on curriculum development and classroom management in Katsina state. The research questions, hypotheses and review of related literatures were in line with formulated objectives. Survey research method was adopted and the population of the study consisted of 21,985 teachers and educational administrators of Katsina State. But, cluster sampling technique was used to derive the population of the study from the three Educational Zones; 3,955 teachers and 286 educational administrators were randomly selected from six local governments of the State; which are Daura, Zango, Katsina, Kaita, Funtua and Danja. The total number of sampled respondents was 432 teachers and educational administrators. The data for the study were collected through the use of self constructed questionnaire; the validity of the instrument was determined through vetting of the content by expert in educational administration and English language. The reliability coefficient was obtained at 0.77. The data collected were presented by the use of frequency and percentages. The formulated hypotheses of the research were tested using non-parametric statistics of t-test at 0.05 significant levels. The findings of the study indicated that there were regular staff development programmes due to the roles and function of district supervisors in Katsina State. While, there was no proper school instructional guidance due to the poor function of district supervisors in Katsina State. In view of the findings, conclusions and recommendations were made to improve the situation in Katsina State, and Nigeria at large.