Family name ส้วย (Suai 
, ส้วย) , worldwide, is quite a rare surname. The cognomen ส้วย is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Myanmar, where it is a rare surname, and Indonesia, where it is a very rare surname. In absolute terms, this name is the most popular in India, Malaysia, and Indonesia. Likewise, ส้วย is the forename as well as the last name.