Background: Trauma is the leading cause of death among teens and youth in the developing countries. Head injury accounts for nearly onethird of all trauma deaths and is the leading cause of disability and economic loss. The aim was to study the aetiological pattern of head injury and to highlight the burden of the aetiological factors in our setting. Materials and method: A prospective study on patients admitted with traumatic brain injury at Abubakar Tafawa Balewa University Teaching Hospital, Bauchi, a tertiary hospital located in North-eastern Nigeria with neurosurgical services being rendered to her primary and referred patients. Data were collected using structured proforma and were analysed using SPSS version 20 software. Descriptive statistics expressed in mean, frequency and percentages. Results: Five hundred and thirty-seven patients were recruited into the study. The mean age of the patients was 37.02 ± 17.21. Most of the study population were below 50 years of age (80%) with male preponderance of 5:1. Road traffic accident-related head injury and gunshot related head injury accounted for 85% and 2% respectively. Fifty percent of the study population were car occupants while pedestrians constituted 11%. Conclusion: Road traffic accident is the leading cause of the head injury in our environment with motor-vehicular related accidents being the most common. The productive age group are severely affected with economic tolls on the family and the nation. Concerted public health efforts are required to prevent/reduce the incidence of head injury