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Cognomen Fiser (Fiser , Fišer ) , around the globe, is quite a common family name. The surname Fiser is characteristic of Czechia, where it is quite a common surname, Slovenia, and Croatia, where it is quite a rare surname. In absolute terms, it most frequently occurs in Czechia, the United States, and Slovenia. Much less frequently, Fiser is the forename as well as the last name.