Cognomen Phanthiwa (Phanthiwa 
) , in all the world, is an extremely rare last name. The surname Phanthiwa is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Phanthiwa is the forename as well as the last name.
Namma, Posuwattanakul, Phromsuwa, Rueanthon, Jaksomsak, Thongnok, Yotthamee, Phromsuwan, Jampamool, Thongyuan, Khamchaiwong, Thummawirun, Nanthachai, Isarankura, Phongphanna, Thammawirun, Khamguna, Wiriyaphatcharanon, Kaewmaha, Suttanom, Thirak, Na Nan, Walker, Yueram, Songwijit, Aunkham, Ketklom, Phithak, Phokrathok, Lumnoree, Temphalathinon, Homhuan, Howhuan, Wansian, Saetoeng, Bua Ngam, and Rattanaphong