In the entire world, ทนัญชัย (ทนัญชัย 
) is a very rare principally masculine, but very infrequently girly forename. The first name ทนัญชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare principally male, but very seldom feminine name. Also, ทนัญชัย is the last name as well as the forename.