Throughout the world, コク (Quoc 
, Kuk 
, Coc 
) is a common predominantly masculine, but very infrequently feminine first name. The first name コク is habitual in Vietnam, where it is quite a common male name, Hong Kong, where it is quite a rare unisex name, and France, where it is a rare boy's name. Not in comparison with a country's population, this name is the most popular in Vietnam, Indonesia, and the United States. Likewise, コク is the last name as well as the forename.