Surname Ritthidej (Ritthidej 
) , across the world, is a rare family name. The last name Ritthidej is habitual in Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Ritthidej is the forename as well as the last name.
Mesa, Phrakhrusamuwissarut, Pichayaporn, Wichayutphong, Vatcharin, Thatsanee, Thammavij, Wissarut, Itthikorn, Nachanon, Apatsara, Aurathai, Garnpimol, Pensiri, Suksiri, Kruebhan, Supat, Seni, Phrakhrusamu Wissaru, and Phrakhrusamu Wissarut