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In all the world, Buff (Buff , Bufer , Buffle ) is a rare unisex forename. The forename Buff is characteristic of the United States, where it is a very rare gender-neutral name, Australia, and Indonesia, where it is a very rare male name. Measured by absolute frequency, this name is the most popular in the United States, China, and Indonesia. More frequently, Buff is the last name as well as the forename.
Buff is also a name for the fictitious and mythical characters: Buff , the operatic character in the opera Der Schauspieldirektor by Wolfgang Amadeus Mozart; a buffo singer.