Cognomen ยุ้ย (Yui 
, Yuiy 
, Yuid 
) , all over the world, is quite a common last name. The cognomen ยุ้ย is characteristic of Malaysia, where it is quite a rare surname, Hong Kong, and Peru. In absolute terms, it is commonest in South-eastern Asia, particularly Malaysia, Indonesia, and Myanmar. Also, ยุ้ย is the forename as well as the last name.