All over the world, สุดนัย (สุดนัย 
, Sudanai 
) is a very rare mostly boy's, but uncommonly feminine forename. The forename สุดนัย is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare mostly masculine, but seldom feminine name. Much less frequently, สุดนัย is the last name as well as the forename.