Last name Ornuma (Ornuma 
) , across the world, is an extremely rare cognomen. The cognomen Ornuma is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, Ornuma is the forename as well as the last name.
Jara, Daratrai, Labantao, Laothong, Janprison, Jeerakamol, Yambangyang, Udomsate, Supakitdamrong, Kanchanit, Phanprasit, Tanjaroen, Intanongluk, Intaranan, Wanbuadang, Sawangjaeng, Charoensuk, Phonphuntin, Thongwongsa, Kristiansen, Wanchoosert, Kanjanarujivut, Plaiduang, Phoovised, Pothidokmai, Khoeikaeo, Grant, Miedtubthai, Limnua, Hmuadmueng, Magrudthong, Supasri, Summart, Sertsom, Songwai, Aoluknua, Phongthanyadilok, Chomram, Kerdsa Ard, Panmunee, Roemcharoen, Othatawong, Wongwai, Saensong, Srinaken, Choocham, Kongkaew, Kharasin, Chusith, and Yingthaweesak