Last name Jansuwan (Jansuwan 
) , throughout the world, is quite a rare cognomen. The last name Jansuwan is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname, and Singapore, where it is a very rare surname. Much less frequently, Jansuwan is the forename as well as the last name.
Sopa, Panida, Nondet, Orawan, Wanida, Wisanu, Sangiam, Sangpen, Sarawut, Sulawan, Supanan, Supalak, Sudarat, Sutikan, Suchada, Sujitra, Songwut, Somporn, Somchok, Anchisa, Kamtron, Kaewjai, Bancha, Chicha, Apaporn, Anurak, Chum, Para, Jita, Wipa, Malee, Supap, Supit, Kanis, Kitti, Jamin, Keawjai, Jinda, Irisa, Onuma, Wilai, Wihan, Manida, Montha, Salisa, Saitip, Suchat, Somjai, Nirut, and Klairung