Family name Wannasak (Wannasak 
) , globally, is a very rare last name. The surname Wannasak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Wannasak is the forename as well as the last name.
Autoom, Jittirat, Wannayoo, Yinsungnoen, Sanonorkkajorndesh, Chuaybamrung, Bunrangsi, Khongklab, Phuriwongwanich, Thongklew, Thongroyying, Srisukantapruk, Srisooksai, Kraiwutthithanakul, Rattanakot, Rungrojwanich, Khiawwijit, Butsabong, Chumkong, Subkongdee, Kladbanhuay, Porjai, Gansab, Gansub, Mayakan, Makkiuean, Saikaew, Laocharoen, Saenauan, Kankaew, Phanjan, Lakkham, Mayakran, Makkluaen, Makkluean, Sawaddee, Sirilar, and Wetcharaporn