Family name คุ้ย (Khui 
, คุ้ย, Rummid ) , in the entire world, is a rare surname. The surname คุ้ย is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Indonesia, where it is a very rare surname, and Myanmar. Measured by absolute frequency, it is the most numerous in Malaysia, Indonesia, and India. Also, คุ้ย is the forename as well as the last name.