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Last name Katana (刀 , Katana , Катана ) , all over the world, is a common family name. The cognomen Katana is habitual in Montenegro, where it is quite a common surname, Bosnia and Herzegovina, and Kenya (explore the name in all countries). In absolute terms, it is commonest in China, Japan, and Kenya. Much less frequently, Katana is the forename as well as the last name.