Surname Tuai (ตวย 
, Tuai 
, ต้วย) , around the globe, is a rare last name. The family name Tuai is habitual in Malaysia, where it is a rare surname, New Zealand, and Myanmar. In absolute terms, it is commonest in South-eastern Asia, particularly Malaysia, Indonesia, and Myanmar. Likewise, Tuai is the forename as well as the last name.