Cognomen Phuwanat (ภูวนาถ 
, ภูวนาท , Phuwanat ) , in the world, is a very rare family name. The last name Phuwanat is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much more frequently, Phuwanat is the forename as well as the last name.
Jara, Khunprab, Doungdee, Hongngam, Inthanon, Sathongin, Sombunpong, Chaiyaket, Chuaibamrung, Prommarak, Pornnipaumpai, Phetsimuen, Rueangsri, Wisutthawanich, Sakornsakolpat, Damrongporn, Nithiporndecha, Wongsanithipat, Wongsanitipat, Sirikhochapan, Sirikhochaphan, Phakhaphatsawat, Keawkong, Amorasin, Artornkit, Srithong, Injan, Onsen, Saeyor, Suriyo, Kumdee, Nguwsuwan, Sohurat, Ainphen, Bangpan, Karamad, Nithiwatphuwakul, Khunlam, Tatphudsa, Tongsri, Tongtae, Topurin, Ngowsuwan, Innurak, Itsaard, Maisomboon, Moolsert, Sukhkharat, Phetsuk, and Wongphuengkit