Surname Menghong (孟宏 
, 梦虹 , Menghong 
) , across the world, is a rare cognomen. The family name Menghong is characteristic of South-eastern Asia, particularly Cambodia, where it is a very rare surname, Thailand, and Singapore. Not in comparison with a country's population, it most frequently occurs in China, Thailand, and Cambodia. More prevalently, Menghong is the forename as well as the last name.