The study investigated the Principal’s Management Styles as predictors of students’ motivation and achievement in Mathematics in Afikpo education zone. The study was guided by ten research questions and ten hypotheses. The study adopted a correlation survey research design. The population of the study was 2857 which comprises 2777 SS II students from 80 public schools and 80 Mathematics teachers, in Afikpo Education zone in Ebonyi State. Systematic random sampling technique was used.Sample size of 880 respondents will be used for the study. The sample comprises 80 mathematics teachers and 800 SSII students from the 80 secondary schools in Afikpo Education Zone. Two instruments were used for the data collection in this study which include; Principal’s Management Style Questionnaire,PMSQandStudent Achievement in Mathematics’ Proforma SAMP. The reliability index of PMSQ, was obtained as 0.95. Regression analysis was used to provide answers for the research questions and hypotheses 1- 4 at 0.05 level of significance. The result of the study revealed that principals’ autocratic, democratic, and transformational management styles, were good predictors of student’s achievement in Mathematics. The findings also revealed that laissez-faire management style negatively predictor of students’ achievement in Mathematics. Based on these findings, the researcher recommended that Government should adequately encourage Principals in developing strategic plan to enhance management skills across the secondary schools.