Cognomen Thongyam (Thongyam 
) , in all the world, is a rare surname. The family name Thongyam is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, Thongyam is the forename as well as the last name.
Sura, Amornrat, Kanyarat, Piyapoom, Rongrata, Tanaporn, Thaksina, Nantawan, Siwaporn, Vipaporn, Chamainach, Patcharee, Rongratana, Thanapong, Thanakrit, Thanyarat, Nattakorn, Supawadee, Chalermpol, Wiphada, Jittima, Seree, Virat, Sirada, Raksit, Lalita, Likita, Maylada, Tapapon, Sarayut, Somchai, Chairut, Patiwat, Pakprawee, Preecha, Pongtep, Jettana, Supawat, and Natthakarn