Surname Ryong (Ю 
, Ryong 
, Рёнг ) , worldwide, is quite a rare last name. The last name Ryong is habitual in Kazakhstan, where it is quite a rare surname, Russia, and Kyrgyzstan, where it is a rare surname. Not in comparison with a country's population, the name is most common in Russia, China, and Kazakhstan. More frequently, Ryong is the forename as well as the last name.