All around the world, Tanwa (ธันวา 
, Tanwa 
) is quite a common epicene first name. The forename Tanwa is characteristic of Thailand, where it is quite a rare dominantly male, but uncommonly feminine name, Nigeria, where it is a rare predominantly feminine, but very seldom male name, and India, where it is an extremely rare girly name. Much less frequently, Tanwa is the last name as well as the forename.