Cognomen Chawengsak (Chawengsak 
) , in all the world, is an extremely rare family name. The cognomen Chawengsak is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, Chawengsak is the forename as well as the last name.
Laoin, Pruksatewet, Pilonpongsathorn, Phiewsuwan, Nongthon, Srisahaburi, Assawinnimit, Boonkanit, Kwanmuang, Kanusonth, Puangngam, Plianphairot, Iamsamang, Praditphol, Wanichrojanarat, Sangboonruang, Saengbunrueang, Praditpon, Khamkaen, Kanosonth, Boonkhan, Khamta, Na Pairee, Meesiri, Senayod, Sripray, Chaikam, Kaewnet, Pataduang, Promnun, Deelert, Naksiri, Ekkarat, Saengjan, Singhnoo, Sritubtim, Chulabut, Boontham, Laksanavilas, and Chaovanaprasert