Cognomen Jarungsak (Jarungsak 
) , in all the world, is an extremely rare surname. Much more frequently, Jarungsak is the forename as well as the last name.
Supap, Duangrattanachaya, Pattamadilok, Phumphuang, Khumsakulthai, Kumpreecha, Keawmanee, Changsuwat, Kulviriya, Suratchananon, Yomkaew, Janpriang, Runnurak, Kenapoom, Adulpong, Hasang, Buajan, Sekteera, Nimit, Naktone, and Chuenjitkultaworn