Cognomen Nuai (นวย 
, Nuai 
, หนวย ) , all over the world, is a rare surname. The family name Nuai is characteristic of South-eastern Asia, particularly Malaysia, where it is a rare surname, Myanmar, and Thailand, where it is a very rare surname. In absolute terms, this name is the most popular in Myanmar, Malaysia, and India. More frequently, Nuai is the forename as well as the last name.