Family name Rattanyu (Rattanyu 
) , in the entire world, is a rare cognomen. The cognomen Rattanyu is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, Rattanyu is the forename as well as the last name.
Sri, Pattratip, Siriprapa, Tharatip, Panjarat, Patchaya, Kanoklook, Boonlert, Boonsong, Chadatip, Chadathip, Songtham, Supachai, Tunpong, Duangporn, Tanpong, Phairat, Prasert, Kanjana, Somkiat, Mahidon, Ekapol, Phayon, Pradit, Linda, Ladda, Pinya, Payon, Benya, Jirapat, and Tharathip