In all the world, ทัตวัน (ทัตวัน 
, Tathawan ) is a very rare principally girly, but very seldom male forename. The given name ทัตวัน is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare predominantly feminine, but very infrequently male name. Also, ทัตวัน is the last name as well as the forename.