Family name Phongsai (Phongsai 
) , in the entire world, is quite a rare cognomen. The family name Phongsai is characteristic of Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Phongsai is the forename as well as the last name.
Mae, Pensri, Prasan, Pratin, Jariya, Viyada, Wandee, Wanisa, Wanpiya, Mallika, Malinee, Sareera, Sarunya, Samruan, Samruay, Silawat, Siriwan, Supawat, Suwadee, Somdech, Atchara, Apichai, Buppha, Bunchu, Chawal, Amenah, Ham, Chan, Rada, Sarun, Sayan, Sitti, Amorn, Ampai, Pawat, Pipop, Aorajat, Phiam, Jinda, Niwat, Wijit, Suphin, Suphon, Somnuk, Somyos, Anucha, Arayah, Armina, Lawan, and Chaloem