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Surname Kalau (Kalu , Kalo , Kalau ) , all over the world, is a widespread last name. The surname Kalau is characteristic of Vanuatu, where it is a common surname, Nigeria, where it is quite a common surname, and Hungary (explore the name in all countries). In absolute terms, it is the most numerous in Nigeria, India, and Pakistan. More frequently, Kalau is the forename as well as the last name.