Surname クワイ (Quay 
, クワイ 
, Kawhi 
) , globally, is quite a rare family name. The family name クワイ is habitual in Trinidad and Tobago, where it is quite a rare surname, Singapore, and Malaysia. Not in comparison with a country's population, this name is the most popular in the United States, Malaysia, and France. Very seldom, クワイ is the forename as well as the last name.