Cognomen Lôc (Loc 
, Lôc ) , globally, is quite a common surname. The surname Lôc is characteristic of Macao, where it is quite a common surname, Vietnam, where it is quite a rare surname, and Malaysia. In absolute terms, the name is most common in Vietnam, Malaysia, and the United States. More prevalently, Lôc is the forename as well as the last name.