Background: There exists a strong association between prediabetes and TB, which brings about disease activation, relapse and several other unfavourable treatment outcomes among TB patients. The association between prediabetes and TB have also revealed a concomitant increase in the prevalence of prediabetes among TB patients. This study determined the prevalence of prediabetes among tuberculosis patients attending the DOTS clinic of the University of Ilorin Teaching Hospital (UITH) Nigeria. Method: This was a cross-sectional study involving one hundred and eighty consenting TB patients, selected using systematic random sampling techniques. Socio-demographic data was collected using a questionnaire. Laboratory investigation was done using NICE guidelines to determine the prevalence of prediabetes among TB patients. Demographic information was entered, calculated and analysed using Statistical Packages for Social Sciences (SPSS 23). Results: The age of the participants ranged from 18 to 95 years with a mean age of 37 (SD ± 15.01). The prevalence of prediabetes among TB patients was 8.9%. Conclusions: The study showed a high prevalence of prediabetes among TB patients attending DOTS clinics at UITH, Ilorin.