Context: It is estimated that 0.05 to 5% of tuberculosis cases have presented with oral manifestations. Primary oral tuberculosis may be the first indicator of HIV disease and can be a diagnostic challenge for the clinician. Aims: To diagnose a patient with primary tuberculosis in the oral cavity and to refer for medical management. Settings and design: The representative tissue, 0.5 × 0.5 cm in diameter, taken from the margin of the tongue, was formalin fixed, paraffin embedded, and processed. Materials and methods: Sections obtained were stained with routine H&E stains and Ziehl–Neelsen stain for acid-fast bacilli. These stained sections were examined. Complete blood examination and sputum culture were done and chest X-ray taken. Conclusion: Tuberculosis is a major cause of morbidity and mortality worldwide particularly in growing economies like India. It can involve any part of body, particularly lungs and lymph nodes. Involvement of palate is uncommon and often secondary to pulmonary tuberculosis. The purpose of this study is to describe the atypical nature of tubercular ulcer. Biopsy of the margin of ulcer revealed tuberculosis.