Cognomen Vongay (Vongay 
, Вонгай 
) , in all the world, is a rare family name. The cognomen Vongay is characteristic of Kyrgyzstan, where it is a rare surname, Kazakhstan, and Thailand, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Kazakhstan, Russia, and Thailand. Very seldom, Vongay is the forename as well as the last name.