Metabolic Syndrome (MetS) is related to the increased risk of non-communicable diseases (NCDs). Teacher profession is an adult group with various risks of NCDs. This study aims to assess the determinants of the MetS in teachers with central obesity. Material and Methods: The study was conducted in Makassar, South Sulawesi, Indonesia with cross- sectional study design on 12 secondary schools. The number of samples in this study was 129 teachers. The prevalence of the MetS was determined using criteria from the Joint Interim Statement, while physical activity and sitting time were measured using the International Physical Activity Questionnaire (IPAQ). Results: Respondents in our study were mostly women (78.3%) with an average age of 49.8 years. The prevalence of the MetS in our study population was 39.5%. The prevalence of the Mets was higher in Buginese ethnic (70.6%), respondents with more income (56.9%), bachelor degree (80.4%), married (98%), family history of diabetes mellitus, obesity, hypertension and heart diseases (52.9%), and moderate physical activity (37.3%). There was a significant relationship between sitting time 4 hours; p=0.004), parameters of Mets (p<0.001), LDL (p=0.026), and LDL/HDL ratio (p<0.001) with the Mets. Conclusions: The prevalence of the Mets is high among obese teachers in our study population. Sitting time was an important determinant for MetS among obese teachers.