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Across the world, Piyawan (ปิยวรรณ , Piyawan , ปิยะวรรณ ) is a common largely girly, but uncommonly masculine forename. The forename Piyawan is characteristic of Thailand, where it is quite a common mostly female, but infrequently male name, Japan, where it is a very rare female name, and the United States, where it is an extremely rare gender-neutral name.
Chana, Turatong, Nabchidchai, Wisaruetanon, Yoichaiya, Sandhisomabandhu, Changnarin, Chianwichai, Choomuang, Buranasin, Kaewpichai, Pichanusakorn, Phantawong, Jiravanstit, Yaipangkeaw, Saengthong, Kanthaweechai, Pongpanich, Limrangsan, Wongkhaluang, Thipprachaban, Thongkhanarak, Teerapak, Thaikoed, Leevairoj, Khamkaew, Meesen, Saetan, Surnin, Sriwan, Pienjud, Saeyong, Saewana, Somnual, Chunual, Ketsena, Boontanachok, Panapoy, Phanhao, Nilubol, Nimlamai, Incheelong, Ounruean, Maiyapan, Salaenai, Chanterm, Boonchot, Komolwit, Pachprom, and Rattanamanee