Family name Sornsak (Sornsak 
) , across the world, is a very rare surname. The surname Sornsak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Sornsak is the forename as well as the last name.
Mak, Kerdchan, Keawragsa, Phanchan, Phaitoon, Juntawee, Thongjit, Nilmanee, Siriphaen, Chatpaiboon, Rajchawat, Rungsritong, Tantivorravit, Tuntanokij, Niyomtham, Yodsamutr, Manochomphu, Angsupanich, Chaipakdee, Srithongkum, Booranathet, Natakuathung, Bunsaeng, Congtrakultien, Somwattana, Suankaew, Jiju, Jeeju, Nuoykaew, Samart, Pandum, Pupetch, Insuan, Suksong, Suaisod, Soykham, Hiranthananon, Choojan, Bromajet, Buaklieng, Prohchuntuek, Pimyota, Matapiampiti, Makjinda, Musikawong, Singthep, Singpaiboonporn, Sinsomboon, Choojun, and Kongcharoenpanich