Family name 丁丁 (丁丁 
, Dingding 
) , in the world, is quite a common surname. The surname 丁丁 is habitual in Philippines, where it is quite a rare surname, Hong Kong, where it is a rare surname, and China. Not in comparison with a country's population, it is the most numerous in China, Philippines, and Indonesia. More prevalently, 丁丁 is the forename as well as the last name.