Background: The elderly are more likely to develop symptomatic severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection. Malnutrition is a risk factor that can affect the clinical course of disease and physical and mental performance. Objective: To assess the nutritional status of geriatric patients using the modified nutritional risk in critically ill patients (mNUTRIC) and the geriatric nutritional risk index (GNRI), and evaluate the prognosis with the short-term outcome. Methods: A number of elderly individuals (> 65 years) hospitalised with COVID -19 were included in the study. Data on demographics, laboratory results, and concomitant diseases were collected. The geriatric nutritional risk index (GNRI) and modified nutritional risk index for critically ill patients (mNUTRIC) were used to assess nutritional status. For statistical analysis, categorical data were analysed with the Pearson chi-square test and continuous variables were analysed with the unpaired Student's t test. Results: A total of 86 (59.27%) were survivors and 58 (40.28%) were nonsurvivors. The mean value of APACHE II and SOFA was significantly increased in the nonsurvivors compared with the survivor group. Mean GNRI and mNUTRIC values were 87.93±8.49 and 2.41±0.82 in survivors and 81.40±6.32 and 4.78±1.39 in the survivor group. The mean GNRI and mNUTRIC were significantly different between the survivor and non-survivor groups Conclusion: GNRI was significantly lower and mNUTRIC was significantly higher in the non-survivor group compared with the survivor group. The change in GNRI was significantly negatively correlated with mortality and MNUTRIC was significantly positively correlated with mortality.