Surname Намхай (Namkhai 
, Намхай 
) , in the world, is a rare last name. The surname Намхай is characteristic of Mongolia, where it is quite a common surname, Hungary, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Mongolia, China, and Hungary. Likewise, Намхай is the forename as well as the last name.