Surname Phirawat (พีรวัส 
, พีรวัฒน์ , Phirawat ) , globally, is a very rare cognomen. The family name Phirawat is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Phirawat is the forename as well as the last name.
Marut, Phongsri, Ruansang, Lasonthi, Thongnoi, Saleepong, Chanditthawong, Chotikunlaphat, Kunlathipbowonphak, Prachasri, Phakhamta, Chadatornsutasin, Kaewwichit, Kiattiwuttinon, Panyaphruek, Piyaphonsombat, Thippharat, Udomdechaweth, Kittijarujit, Sangkhachantraranan, Kajornkittitumrong, Phongsiripricha, Phiphitniphon, Kajronkitti, Bhasertsri, Boontomma, Banda, Haonu, Charam, Chomxhoel, Botham, Buasap, Kankeb, Phoyim, Totcha, Nokaew, Rattanachote, Honmak, Samaiyu, Sringam, Chansajcha, Phetnoi, Nimnuan, Worasap, Mueansod, Salawich, Sukthong, Chaywiriya, Vichit, and Chamnanwanichakul