Cognomen Хайдун (Haidong 
, Хайдун 
) , around the globe, is a rare family name. The last name Хайдун is characteristic of Taiwan, where it is a rare surname, Malaysia, where it is a very rare surname, and Georgia. Not in comparison with a country's population, the name is most common in China, Taiwan, and Malaysia. More frequently, Хайдун is the forename as well as the last name.