Surname ทุย (Thui 
, ทุย , Tuii 
) , around the world, is a rare last name. The family name ทุย is habitual in South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Myanmar, where it is a rare surname, and Thailand, where it is a very rare surname. Also, ทุย is the forename as well as the last name.