Surname Yingsak (Yingsak 
) , across the world, is an extremely rare cognomen. Predominantly, Yingsak is the forename as well as the last name.
Inon, Jittakoat, Tantinuchawong, Netrawichien, Wongkaew, Sittiyakorn, Sukkaseam, Chantarat, Kraipinit, Pongchang, Piputvaraporn, Lauhatanon, Leekaewkrua, Thongpichai, Nantarojanaporn, Wangphoembandit, Sukontasap, Phanthapumee, Lekhavanit, Jonglertjesdawong, Junthanasatien, Tanprasoet, Jenratha, Jomsuriya, Duangdee, Phetsaenanan, Mabua, Sasom, Disnugul, Talapa, Tipsuk, Samibut, Shatsena, Suebsoh, Aksonlong, Kayaikitjakarn, Yantapanit, Kaewbovorn, Piturat, Pimlikitsak, Larpnarongchai, Janyeam, Nuanpan, Yoskrid, Maleewat, Srisawat, Boontham, Petchsut, Pechnil, and Kittivorakanchai