Family name Poolsuwan (Poolsuwan 
) , all around the world, is a rare surname. The cognomen Poolsuwan is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Pisit, Pitchayapak, Pattaraporn, Chakrapongse, Pattarawud, Natchanan, Noppagate, Nipitpon, Jatuporn, Thalerngsak, Poonsind, Sangrung, Pongpak, Somchok, Sivarut, Siripak, Sanphet, Arunja, Tanee, Siriporn, and Thalerngsakmr