Last name Локк (Locke 
, Lokk , Локк 
) , across the world, is a common family name. The last name Локк is characteristic of Belize, where it is quite a common surname, Estonia, and Jamaica (explore the name in all countries). Measured by absolute frequency, the name is most common in the United States, the United Kingdom, and Canada. Much less frequently, Локк is the forename as well as the last name.