Cognomen Rattanawichai (Rattanawichai 
) , across the world, is a rare surname. The surname Rattanawichai is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Pon, Chawanus, Chutarat, Krittima, Papasorn, Rapeepan, Thatsani, Tongchai, Varunyou, Chareerat, Chatchai, Chiraphon, Phatchara, Nithiwadee, Watcharee, Wuttikeat, Chinnakrit, Pathomporn, Thawatchai, Napatsanan, Pattaradanai, Papassorn, Rattanaporn, Seehasate, Yuwadee, Ploi, Alisa, Ampai, Benya, Thawi, Napar, Bualai, Kamlai, Phawat, Sasiphen, Jariya, Vikorn, Mongkol, Siriluk, Parinya, Rojjana, Votthipat, Wirasak, Wutikrai, Yollawee, Tripop, and Phattaradanai