Tuberculosis of thyroid gland is a rare disease, the diagnosis of which is based on bacteriological and/or histological criteria and on the notion of an isolated thyroid infection. Bringing 2 observations, the authors recall the thyroid gland’s resistance to infection generally, and tuberculosis in particular; the different clinical pictures and imperatives of treatment being no different from the other localizations of tuberculosis. This treatment enables a simplification of the evolution of the disease and a preservation of the thyroid function