Objectives: Awareness about complications is important to reduce diabetes related morbidity and mortality. This study aimed to assess awareness of diabetes complications and associated factors among type 2 diabetic patients. Institution based cross sectional study was conducted from April to June, 2018, using simple random sampling technique, and interviewer administered questionnaires.Results: The mean age was 41± 1.46 years and 56 % were females. Awareness regarding diabetic complications was 48.5% with 95% CI (43.3, 52.7%). Male sex (AOR: 4.67, 95% CI (2.53, 8.61)), age of 31-45years (AOR: 7.30, 95% CI (3.10, 17.17)), 46-70 years old (AOR: 15.02, 95% CI (6.11, 36.92)), read and write (AOR: 3.79, 95% CI (1.78, 8.06)), primary school (AOR: 9.58, 95% CI (3.26, 28.18)),high school and above (AOR: 7.46, 95%CI (3.02, 18.44)), NGO employee (AOR: 7.24, 95% CI (2.68,19.53)), having a family history of DM (AOR: 5.55, 95% CI (2.53,12.20)); income of 1001-1500 (AOR: 3.22, 95% CI (1.28,8.10)), 1501-2500) and >2500 Ethiopian birr (AOR: 7.18, 95% CI (1.70,30.28)) ≥ 2500 ETB (AOR: 7.18, 95%CI (1.70, 30.28)) were significantly associated with good awareness. To improve patient's awareness on DM complications providing health education for type 2 diabetic patients is crucial.