Cognomen Jamsawang (Jamsawang 
) , across the world, is a rare family name. The surname Jamsawang is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
Manop, Saowarak, Supreeya, Sumontha, Anissara, Chatchai, Chonlada, Chutirat, Boonsong, Kotchapa, Kritanan, Podsatorn, Purichaya, Tassanewan, Tipaporn, Natsarun, Napharat, Nopparit, Nutthika, Nutchaya, Supassara, Krittanan, Sauwaluk, Nuanpak, Narunat, Tanapat, Ataya, Chang, Sasima, Sompat, Sompad, A-Taya, Chaiya, Kasana, Patcha, Pinpet, Preeyanut, Danita, Wandee, Sasiton, Sirirat, Surasak, Sompong, Sriprae, Chaiyos, Pannipa, Pornpop, Duanpen, Nutcha, and Ratchanon