Verbascum nigrum, the black mullein or dark mullein, is a species of biennial or short-lived perennial herbaceous plants in the genus Verbascum (mullein), native to dry open sites in Europe and the Mediterranean region. It grows to 0.5–1.5 m (1.6–4.9 ft).
A tentative seed identification of V. nigrum has been made from substage II of the Hoxnian interglacial at Clacton in Essex.