Last name Ratanai (Ratanai 
) , in the world, is an extremely rare family name. The last name Ratanai is habitual in Southern Asia, particularly India, where it is an extremely rare surname. Much more prevalently, Ratanai is the forename as well as the last name.
Bai, Devi, Jaimoong, Theingvong, Doungjaisak, and Prasertvit