Family name Premsak (Premsak 
) , worldwide, is an extremely rare last name. The cognomen Premsak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Premsak is the forename as well as the last name.
Kumlai, Yossanthia, Choomaklaem, Choomakleam, Katesrinarong, Kaewmoragot, Ketsrinarong, Khainoonka, Premruetai, Jarunsakda, Noiboonsook, Ngowprasert, Intasuwan, Boonsongchan, Krisanamis, Premprasert, Dumrongtae, Limpakanont, Wuttisetthadha, Sarikabutra, Phetchamnan, Chaithanawatsakun, Huantham, Ngaochaeng, Thaivong, Tanglien, Paduka, Phosri, Rabieb, Dubrok, Laimak, Sunpung, Bunchen, Kamsudtee, Konkaew, Kraipon, Lertsuriyakul, Prigyai, Pongjit, Thuampibun, Hountam, Huantam, Bunchuen, Komsangtong, Khotmueng, Parisutkul, Puangploy, Laoyookhong, Preecha, and Anusornpanich