Surname รุย (Rui 
, Ruii 
, รุย 
) , globally, is a common cognomen. The last name รุย is habitual in Malaysia, where it is quite a common surname, Cayman Islands, and Luxembourg (explore the name in all countries). Not in comparison with a country's population, it is commonest in China, Malaysia, and Angola. More prevalently, รุย is the forename as well as the last name.