Worldwide, Thanasarn (ธนสาร 
, Thanasarn 
, ธนะสาร ) is quite a rare principally boy's, but scarcely feminine first name. The first name Thanasarn is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare principally boy's, but scarcely feminine name. Very seldom, Thanasarn is the last name as well as the forename.