Tuberculosis is an infectious, chronic granulomatous disease that can involve almost any organ in the body, though primarily lesions are usually confined to the lungs. Oral lesions are an infrequent occurrence in tuberculosis, and tuberculosis of the oral cavity is often a consequence of active pulmonary tuberculosis. Although primary tuberculosis in the oral cavity has been documented, it is a rare occurrence. Oral lesions of tuberculosis though uncommon, are seen in both the primary and secondary stages of the disease. In secondary tuberculosis, the oral manifestations may be accompanied by lesions in the lungs, lymph nodes, or at any part of the body and can be detected by systemic examination. This publication focuses on a typical case of tuberculous ulcer of oral cavity who has reported to our dental college.