Cognomen Roongsak (Roongsak 
) , globally, is an extremely rare last name. Much more frequently, Roongsak is the forename as well as the last name.
Yodquian, Tangpanchasil, Sawangpunya, Mahapunyavong, Mahapanyavong, Thamnurasi, Griffeth, Punyanun, Patoombal, Kuntimar, Suttitanamongkol, Boonchou, Ruckkaphan, Ruckaphan, Pinruanghirun, Polyiem, Promyeam, Kuntima, Satutum, Yotkhiri, Manas, Yantaporn, and Limthongthang