All over the world, Nantwat (นันทวัฒ 
, นันทวัต , นันทวัธ ) is a rare principally masculine, but very seldom feminine forename. The first name Nantwat is characteristic of South-eastern Asia, particularly Thailand, where it is a rare predominantly masculine, but very seldom feminine name. Very seldom, Nantwat is the last name as well as the forename.