We conducted a cross sectional study among 180 adult type-2 diabetic patients in a primary diabetic health care center in Bangladesh to assess their sleep quality and quality of life. We used the Pittsburgh Sleep Quality Index (PSQI) to assess the sleep quality and SF- 36 v2TM for the quality of life. The mean (SD) PSQI global score was 7.28 (3.06). Score of overall quality of life ranged from 914-2910 with mean (SD) score 2044.80 (512.75). 117 participants (65%) were poor sleepers (global PSQI >5) who had significantly poor functioning on all domains of the SF-36 (all p<0.001). Overall sleep quality and quality of life had significant relationship with age (p<0.001), occupation (p<0.05), duration of diabetes (p<0.001), BMI (p<0.05), diabetes complications (p<0.001), hypertension (p<0.05), coronary heart disease (p<0.001) and insulin use (p<0.05). Our study, first ever among diabetic adults in Bangladesh, suggests that Diabetes has a significant impact on an individual’s quality of life (QoL) and sleep quality. Therefore, a comprehensive nationwide study and screening of new patients for sleep problems need to be evaluated.