Background: Coronavirus disease 2019 (COVID-19) results in several complications and mortality in ICU patients. The effect of enteral nutrition on the survival of COVID-19 patients in the ICU has been investigated in limited instances. The aim of this study is to investigate the association of enteral feeding with biochemical and pathological indices associated with mortality in COVID-19 patients. Methods: This case-control study was conducted on 240 patients with COVID-19 hospitalized in the ICU including 120 eventually dead patients as the cases and 120 discharged patients as the controls. All of the patients received enteral nutrition. Data on general information, anthropometric measurements, and the results of lab tests were collected. Results: The recovered patients received significantly more high protein (60.8% vs. 39.6%, P=0.004) and high volume (61.6% vs. vs. 42.3%, P=0.005) formula compared to the dead patients. Mortality was inversely associated with high volume (OR:0.45 CI95%, P=0.008) and high protein formula (OR:0.42 CI95%, P=0.003). The results remained significant after adjusting for age and sex. Further adjustment for underlying diseases and smoking, BMI, and APACHII did not change the results. Conclusion: The findings of the study showed that there was a significant inverse association between mortality and high volume and high protein formula in COVID-19 patients that warrants further investigation.