Cognomen Watsamon (Watsamon 
) , in the world, is an extremely rare family name. The surname Watsamon is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Watsamon is the forename as well as the last name.
Janma, Luekhajorn, Nangkala, Nimchuen, Eakaphan, Wiangosot, Mingmueang, Santisiri, Sukhantha, Srithanan, Boonsaard, Kongthong, Paripaiboon, Pichitdassakornkul, Nakkhunthod, Hanthanom, Hlamphasuk, Watcharin, Sanguanwaw, Saowakhonsathien, Suwirattanaphas, Luangpramoun, Promkaeo, Promsopa, Chaitong, Sungtong, Minkao, Sombat, Srikok, Srirat, Cheewa, Buapeun, Lukbua, Taneng, Inthap, Wanijphoonphon, Vongpornpukdee, Manintu, Saemeng, Sukkree, Kongsil, Kosawiwat, Kiatarun, Payuhin, Ponakngern, Tanange, Nakarin, Wisipat, Maenphuang, and Suwirattanapas