This study aimed to evaluate the TRISS,IMPACT and CRASH prognostic models for prediction of outcome after moderate to severe traumatic brain injury (TBI) in the elderly. This was a prospective observational study on 104 elderly trauma patients who were admitted to tertiary care hospital, over a consecutive period of 18 months. TRISS, IMPACT and CRASH Scores were calculated in ED and outcome was evaluated. The results were calculated using receiver operator characteristic (ROC) curves for the prediction of mortality. 104 TBI patients with a mean age of 66.75 years were included. As conclusion, IMPACT (core, extended) models were the strongest predictors of mortality in moderate to severe TBI when compared with the TRISS, CRASH, and IMPACT (lab) models.