Cognomen Rattanarat (รัตนรัตน์ 
, Rattanarat ) , all around the world, is quite a rare surname. The family name Rattanarat is characteristic of South-eastern Asia, particularly Thailand, where it is quite a rare surname. Much less frequently, Rattanarat is the forename as well as the last name.
Mr, Jirayu, Orapin, Mantana, Sarayut, Samanan, Suthida, Sommart, Somphit, Sompoch, Somchock, Ampawan, Adisorn, Chariya, Chalida, Patikorn, Pawicha, Preecha, Poomtum, Poomrat, Piyawan, Phantip, Rawipa, Phimon, Phakin, Pennee, Kan, Mana, Krit, Tiva, Elle, Alita, Airin, Karin, Kosin, Pimpa, Raewadee, Pipat, Lamai, Janni, Tawat, Varut, Wilas, Mesaya, Chanan, Chaorn, Panida, Pamorn, Piput, and Romchat