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Family name Aoyama (青山 , アオヤマ , Aoyama ) , all around the world, is a common cognomen. The last name Aoyama is characteristic of China, where it is quite a rare surname, Japan, where it is a rare surname, and Singapore. In absolute terms, the name is most common in China, Japan, and Brazil. More prevalently, Aoyama is the forename as well as the last name.