Diabetes mellitus is a chronic disease with a high prevalence and a growing concern worldwide. Type 2diabetes is much more common and account for over 90% in sub-Saharan Africa of all diabetes. In Ethiopia glycemic control and management of co-morbid conditions and diabetes complications are alarmingly sub-optimal. Therefore, maintaining good glycemic control is the main strategy to achieve therapeutic goal. Objective:-To assess factors associated with glycemic control among tyoe2 Diabetes mellitus in Debre Tabor Hospital, Northwest Ethiopia, 2015. Methods: - Institution based cross sectional study was conduct to assess Factors associated with glycemic control among 853 type 2 diabetic patients in Debre Tabor Hospital, northwest, Ethiopia. Systematic random sampling was used to select study participants. Data were collected using a pre tested questionnaire and FBS was measured. Data were entered into Epi- Info version 7 and analysis were made by using SPSS version 20 software with confidence interval of 95% and p-value less than 0.05 in multivariate analysis is considered as significant. Result 418 respondents were included in the study .57.7% at 95%cl of the patients had poor glycemic control. Patients who were illiterate (AOR=2.88,95% cl 1.44 - 5. 76) ,able to read and write (AOR= 2.67 95% cl 1.39 - 5.23 ) ,feeding plane· ( AOR= 0.46 95% cl 0.30 -0.72 ) ,over weight ( AOR=2.15 95% cl 1.01 - 4.51) ,age 46 and above (AOR=2.15 95% cl 5.10 95% cl 2.34 - 11.12) had associated statically with poor glycemic control, which needs a continuous provision of health education for patients. Conclusion and Recommendation: - Based on this finding, 57.7% of type diabetic patients in the study area had poor glycemic control. Patients who had low level of education and feeding plane, over weighted, age of the respondents which was 46 and above were likely to have poor glycemic control. Health workers of the hospital shall follow glycemic control of type 2 diabetic mellitus patients regularly to improve service quality and advise them appropriately. Key words: Diabetes mellitusglycemic control; determinant factors, North West Ethiopia.