Family name Poonboon (Poonboon 
) , worldwide, is a very rare surname. The last name Poonboon is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
Sujin, Napat, Jutarat, Matchima, Piyaporn, Ronachaya, Jutharat, Jutharut, Worakrit, Kodchaparn, Juthaphorn, and Patcharapol