Family name Ratchanai (Ratchanai 
) , globally, is an extremely rare cognomen. Much more prevalently, Ratchanai is the forename as well as the last name.
Budda, Suwanchompoo, Dongsaensuk, Prasongdai, Premprakin, Wanglert, Tannopparatwong, Kongsima, Srisunakrua, Bootsanlee, Chaiyana, Shinayos, Yaowajitt, Mahapho, Jensen, Jamjan, Sennin, Chinayot, and Charoenchai