Study of the prevalence of NAFLD and identifying its risk factors would be critically important due to the spread of these diseases worldwide. But, the prevalence of NAFLD in Sudan remains uncertain, due to lack of studies and there are no national surveys have been conducted, for that this study conducted to determine the prevalence of and factors associated with NAFLD with Sudanese populations using unenhanced CT scans as diagnostic tools. About 292 adult participants aged 18 ~ 88 years old, were enrolled in this study. The participants were selected from patients that scheduled to undergo abdominal CT scan. .the following information was collected for each patient on a well-structured questionnaire including sex, age, height; body weight (WT), BMI, Waist circumference, medical history and abdominal CT scan. Those who had a history of alcohol consumption, hepatic mass, viral hepatitis and liver cirrhosis, were excluded. Liver-to-spleen ratio (L/S) <1.0 was used to diagnose the presence of liver fat. The overall prevalence of nonalcoholic fatty liver in this study was (43) 14.7%. There was no prevalent difference between males and females (15.5 vs 14 %). Nonalcoholic fatty liver in our population was 24.2% in obese participants (BMI >30), 20.4% and 10.3% in hypertensive and diabetic participants, respectively. Patient with NAFLD were older than other (P=0. 022) and there is a significant relation between body weight and NAFLD (p=. 031)