Family name Chaiyasuk (ชัยศักดิ์ 
, Chaiyasuk , ไชยสุข ) , all over the world, is quite a rare last name. The last name Chaiyasuk is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname. More prevalently, Chaiyasuk is the forename as well as the last name.
Rach, Punnapan, Dechartorn, Jiraporn, Nicharat, Noppadol, Nuttakan, Kwanhatai, Intisarn, Sitthisak, Kornnikar, Phimanmat, Ruchirada, Thitaporn, Suphaphorn, Methichai, Suphadsorn, Maethinee, Yanyong, Napat, Orasa, Omjai, Meesuk, Anuson, Chalom, Wanida, Anusorn, Benyapa, Paisarn, Paiboon, Paopong, Tananda, Wasutha, Wittaya, Phra Siriwat, and Theeraphong