Cognomen Λου (Lou 
, Λου 
) , in the entire world, is a widespread family name. The cognomen Λου is habitual in Macao, where it is a widespread surname, British Virgin Islands, where it is a common surname, and Cayman Islands, where it is quite a common surname (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in China, Algeria, and Ivory Coast. Much less frequently, Λου is the forename as well as the last name.