Cognomen Tongkaw (Tongkaw 
) , throughout the world, is a rare family name. The family name Tongkaw is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
Sadet, Pongpisit, Pratomwan, Pratumwan, Khemmikawat, Kornkanok, Setthalak, Sirikhwan, Nattapol, Thapanee, Jutharat, Ruangwit, Pornphot, Kritsana, Archawin, Sivakorn, Monnawat, Jinatta, Phunnee, Prakong, Pakamas, Kittima, Kantika, Amonrat, Sudarut, Sasalak, Prarom, Aekvit, Aumnat, Nirat, Kantamanee, and Weerasarut