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Throughout the world, พลอยศิริ (พลอยศิริ , Ploysiri , Phloisiri ) is a very rare largely female, but infrequently male first name. The first name พลอยศิริ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare largely feminine, but seldom masculine name. Much less frequently, พลอยศิริ is the last name as well as the forename.