Family name Kongkong (空空 
, Kongkong 
, คงกันกง 
) , throughout the world, is a rare surname. The cognomen Kongkong is characteristic of South-eastern Asia, particularly Malaysia, where it is a rare surname, Thailand, and Philippines, where it is a very rare surname. Not in comparison with a country's population, it is commonest in South-eastern Asia, particularly Indonesia, Thailand, and Philippines. More frequently, Kongkong is the forename as well as the last name.