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Surname Koetsier (Coetzee , Koetsier , Куцир ) , in the entire world, is a common last name. The cognomen Koetsier is habitual in Namibia, where it is a common surname, South Africa, where it is quite a common surname, and Jersey (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in South Africa, Namibia, and Netherlands.