Surname Tannin (Tannum 
, Tannin 
, Танин 
) , worldwide, is a rare family name. The last name Tannin is habitual in Norway, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Kazakhstan. Not in comparison with a country's population, it is commonest in Russia, Kazakhstan, and Norway. Also, Tannin is the forename as well as the last name.