Surname 库 (Koo 
, 库 
, Kuh 
) , around the globe, is a common last name. The cognomen 库 is habitual in Hong Kong, where it is quite a common surname, Singapore, and Brunei (explore the name in all countries). In absolute terms, it most frequently occurs in China, Malaysia, and Hong Kong. Likewise, 库 is the forename as well as the last name.