Background: Diabetes mellitus, (DM) is a metabolic disorder characterized by hyperglycemia due tornabsolute or relative insulin deficiency and it remained the fourth leading cause of death worldwide.rnHyperglycemia or high blood sugar is a common sign of uncontrolled diabetes and leads to severerndamage. Poor understanding of the disease could affect glycemic control and result in preventablernDiabetic complications. Accordingly, good knowledge, attitude, and practice of glycemic control arernimportant to increased quality of life,minimize diabetes complications,and lower the incidence of death. rnObjectives: -This paper detailed the cross-sectional study that measures knowledge, attitudes, andrnpractices, and associated factors of diabetic patients about glycemic control. rnMethods and Materials: A total of 361 were enrolled in the study, the recruitment tool place by usingrnsystematic random sampling techniques in one academic teaching hospital, Addis Ababa, Ethiopia. Thernknowledge, attitude, and practices were measured using standard structured questionnaires. rnResult: Nearly half (48.8%) of the respondents were males. Good practice was independently associatedrnwith gender; accordingly, the male was 1.62 more likely to have good practice compare to theirrncounterpart female gender (AOR=1.62, 95%CI: 1.005-2.62, p= 0.04). However, those participantsrnbetween 18-35 age groups were 72 % less likely to have good practice verse to reference group followedrnby participants between the age group of 51-65 who were 51% less likely to have good practice towardsrnglycemic control rnConclusion: -Despite they have experienced the event of the hyperglycemic and routine visit of a diabeticrnpatientto a diabetes clinic; the knowledge, attitude, and practice about glycemic were found to be good.