Cognomen Ratthawit (รัฐวิชญ์ 
, Ratthawit 
) , all over the world, is an extremely rare family name. The cognomen Ratthawit is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname, and Malaysia. Much more prevalently, Ratthawit is the forename as well as the last name.
Lotae, Rachanonpoungmanee, Rojchanchai, Lekwongderm, Thitidethawong, Thitiditthawong, Sangbuakaew, Sarawutwinai, Pitithanaworapong, Piyathananrat, Ratthachaianan, Tassanapinyo, Ekaphongphaisan, Issarathavornsak, Wasinphongthanat, Manopchantaroj, Arayapongpakdee, Charoenphol, Chinchaiyaphat, Rungkiatthaweekul, Boonchaikittiwat, Photchanaprasert, Phrompanya, Prommajan, Peerasararoj, Bunlungsak, Mitaem, Anundilokrit, Boonnak, Pijitbunjong, Rattana, Rojchutiwat, Thongda, Torateekorntawat, Mardsalee, Sakudomchai, Siriratthanamethapor, Akkrapimvara, Katanyunat, Khobkoonram, Phokinrueangkit, Phokinrueankit, Phetchan, Rueanrakrao, Setthayukanont, Sririrattanametaporn, Amonanantaphat, Barameekanjanawat, Chonburi, and Watcharathitichayanon