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Around the world, Oser (Oser , Озер , 奥泽 ) is a rare largely male, but seldom feminine given name. The first name Oser is habitual in Philippines, where it is a very rare dominantly boy's, but uncommonly girly name, India, where it is an extremely rare epicene name, and Nigeria. Measured by absolute frequency, it is commonest in India, China, and Nigeria. More frequently, Oser is the last name as well as the forename.