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Cognomen Su-Ying (Su-Ying ) , all over the world, is a very rare last name. The surname Su-Ying is habitual in Malaysia, where it is a very rare surname, and South Africa, where it is an extremely rare surname. Much more prevalently, Su-Ying is the forename as well as the last name. Parts of the name also exists independently as a last name Su, and a first name Ying.