Tanga (tängˈgə, –gä) [key], city (1994 est. pop. 190,000), capital of Tanga prov., NE Tanzania, a port on the Indian Ocean. It is a commercial, industrial, and transportation center, connected by rail with the interior of Tanzania. Exports include sisal, cotton, tea, and coffee. Among its manufactures are rolled steel, plywood, clothing, and twine. Tanga was expanded in the early 19th cent. as a base for caravans into the interior of E Africa.