Background: Excessive daytime sleepiness (EDS) is characterized by persistent sleepiness and often a general lack of energy during the day after apparently adequate or even prolonged nighttime sleep. EDS affects 12% of the normal population and reduces individual’s performance capability and the accuracy of their short-term memory, additionally, it causes learning problems and hazardous events, such as car accidents. Aim of the study: The aim of our study was to find the relationship between EDS and obesity, differences between gender with EDS, and differences between age groups and EDS. Sample and methods: The study was done at the obesity unit, Al-Kindy Medical College. Total 200 people were interviewed, 100 with body mass index equal and more than 30 were considered as an obese group, and the others with body mass index less than 25 was considered as the control group, that are similar to an obese group in the age and gender. We were based on Body mass index (BMI) for assessment of obesity. And sleepiness assessment was based on (Epworth Sleepiness Scale) questionnaire. Results: Obese people with BMI ≥ 30 recorded (54%) of EDS and normal weight people with BMI<25 recorded 33% of EDS. The males group reported 43%, while females reported 44% of EDS. And people with age group younger than 35 years reported a higher percentage of EDS than people equal and older than 35 years. Conclusion: Our study suggests a strong relationship between EDS and obesity, and more increase in BMI; there is a higher risk of EDS that badly affect the daily life activities and productivity in work so we need to be more familiar with these conditions.