Background: Hormone resistin is linked to the development of insulin resistance, but direct evidence of resistin levels in humans with nonalcoholic fatty liver disease (NAFLD) is lacking. Objective: To study the role of fibroscan and resistin level in diagnosis of nonalcoholic fatty liver patients. Methods: This study was conducted on60 NAFLD patients, 27 patients with nonalcoholic steatohepatitis (NASH), and 33 patients with simple steatosis, who were admitted to Tropical Medicine Department in Shebin El-Kom Fever Hospital and 30 healthy subjects as control. Patients were subjected to meticulous history taking, clinical examination, routine laboratory investigations, abdominal ultrasound, fibroscan, and measurement of serum resistin level. Results: Serum resistin can be used to discriminate between simple steatosis group and NASH group at a cutoff level of > 10.5, with 53.3% sensitivity, 83.3% specificity, 76.1% PPV and 64.1% NPV (AUC = 0.73 and p-value = 0.002). Also, there was a significant difference in fibroscan score in comparison between groups, NASH group represented the highest score. There was a significant relation between serum resistin level and fibroscan score in both NASH and simple steatosis groups. Conclusion: Fibroscan and serum resistin level can be used for diagnosis of nonalcoholic fatty liver and for discrimination between simple steatosis and NASH patients.