Family name テンガン (テンガン 
, Tengan 
) , across the world, is quite a rare last name. The last name テンガン is habitual in Ghana, where it is quite a rare surname, Peru, where it is a rare surname, and Brazil. Measured by absolute frequency, it is the most numerous in Ghana, the United States, and Brazil. Likewise, テンガン is the forename as well as the last name.