Cognomen Hlub (Hlub 
) , throughout the world, is a very rare family name. The surname Hlub is habitual in Laos, where it is a rare surname, Vietnam, where it is an extremely rare surname, and Ukraine. Not in comparison with a country's population, it is commonest in Laos, China, and Vietnam. Much less frequently, Hlub is the forename as well as the last name.