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Surname Buhler (Buhler , 比勒, Бюлер ) , all around the world, is a common last name. The surname Buhler is characteristic of Switzerland, where it is a common surname, Liechtenstein, where it is quite a common surname, and Paraguay, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Switzerland, the United States, and Canada. Much less frequently, Buhler is the forename as well as the last name.