Thyroid tuberculosis is rare. We present the case of a 25 year-old woman with tuberculosis of the thyroid. Although seldom observed, tuberculosis should be considered in the differential diagnosis of nodular lesions of the thyroid. Diagnosis is made by histological examination and demonstration of the tubercle bacilli from biopsy or aspiration specimen. The efficacy of fine-needle aspiration cytology in diagnosis of tuberculosis of the thyroid is proved. Administration of antituberculous drugs is considered as the treatment of choice. Abscess drainage is sufficient. In rare cases surgery is necessary. The prognosis is good.