Cognomen Jansawang (Jansawang 
) , all over the world, is quite a rare last name. The cognomen Jansawang is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname. Much less frequently, Jansawang is the forename as well as the last name.
Mr, Anupun, Arporn, Ampika, Apinan, Apicha, Apisit, Pramot, Jerada, Jitima, Jidapa, Tanita, Thawat, Wallop, Wichai, Uriwan, Siriwan, Sirilak, Suriyan, Suriyen, Suparat, Supawan, Somjet, Somyot, Samorn, Saruda, Jane, Time, Sarat, Shane, Sijit, Surat, Sunan, Sujit, Artit, Chaya, Sumphun, Pasan, Pikul, Rewat, Decha, Jarat, Jirat, Tarin, Tewan, Niwat, Warin, Wasan, Pirom, and Sutarat