Cognomen Kasemsun (Kasemsun 
) , worldwide, is a very rare last name. The surname Kasemsun is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Kasemsun is the forename as well as the last name.
Mola, Boonjongrak, Booncharoen, Sujaritwanit, Sukavanicharut, Trakarnchan, Chinnavaso, Wanawanakorn, Wangkasem, Ekkasitbuncha, Khongthon, Puvadolpitak, Bhantumkomol, Sumakaso, Trakrachung, Ratsopa, Punngern, Pratagjai, Chanton, Nunthi, Junnoi, Rawvilai, Kuntee, Mejun, Saengsingkeaw, and Chatphetcharat