Last name Manwai (Manwai 
) , all over the world, is a rare family name. The surname Manwai is habitual in Taiwan, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Malaysia, where it is a very rare surname. In absolute terms, it is the most numerous in Taiwan, India, and Hong Kong. Likewise, Manwai is the forename as well as the last name.