Diabetes mellitus is a complex metabolic syndrome characterized by either insulinopenia or insulin resistance. This study is focused on the ever-growing prevalence of diabetes mellitus and its poor glycemic control in southern KPK This descriptive cross-sectional study was conducted at the outdoor unit, Department of medicine DHQ hospital Bannu, over six months, extending from 30th December 2021 to 30th June 2022. The sample size was 91 and was calculated using the standard WHO formula. The confidence interval used was 95%, with a 5% margin of error. P value 10%. Data was entered and analyzed using SPSS version 19.0.About 18.6% diabetic patients had HbA1c>6%, 25.6% patients had HbA1c between6-8%, 26.7 % patients had HbA1c between 8-10% and 29.6 % had HbA1c>10%.This study revealed that the majority (55%) of diabetic patients belonging to southern KPK had poor glycemic control, as revealed by HbA1c, more than 8%.