This study assessed the Impact of Principal's Supervisory Role Performances on Teaching and Learning of Economics in Secondary Schools in Gombe Metropolis, Gombe State, Nigeria. The study was carried out with five research objectives among others are; to assess the impact of principal's supervisory role of teacher's lesson plan on teaching and learning of economics in secondary schools in Gombe metropolis, to assess the impact of principal's supervisory role of teacher's punctuality on teaching and learning of economics in secondary schools in Gombe metropolis. Alsofive research questions and five null hypotheses were raised for the study. The population of the study was 1021 respondents, comprises 17 principals and 1004 secondary school teachers in Gombe metropolis. A sample of 279 respondents (17 principals and 262 teachers) was selected using proportionate random sampling techniques. Survey design was adopted for the study and a structured questionnaire with a five-point Likert scale titled Impact of Principals Supervisory Role Performance Questionnaire (IPSRPQ) was used for data collection.The Questionnaire was validated by professionals in the Department of Educational Foundations and Curriculum, Faculty of Education, Ahmadu Bello University, Zaria. Pilot study was carried out in Gombe North Senatorial District with thirty (30) secondary school teachers and six (6) Secondary schools principals. The data for the pilot study were analyzed using split halve method of reliability and Cronbach's Alpha was used to compute the reliability coefficient where 0.87 reliability coefficient was obtained.The bio data of the respondents were analyzed using simple percentage and frequency while descriptive statistics (mean score and standard deviation) was used to answer the research questions and t-test analysis was used to test all null hypotheses at 5% (p < 0.05) significant level. The findings revealed a significant difference in the opinion of principals and secondary school teachers on the impact of principal's supervisory role performances on teaching and learning of economics in secondary schools in Gombe metropolis. It was concluded that principals' supervisory roles of teacher's lesson plan, scheme of work, instructional materials, classroom visitaion and teacher's punctuality promote teaching and learning of Economics in secondary schools in Gombe metropolis. Based on the findings, it was recommended among others that school administration through the principal should ensure full participation of teachers in the policy making and adequate preparation of lesson plan for effective teaching and learning of economics in secondary schools. Principals should be well equipped with the necessary skills on their supervisory role to enable them improve punctuality of teachers and reduce the rate of absenteeism among teachers and students.