Last name 希源 (Xiyuan 
, 希源 ) , all over the world, is a rare surname. The surname 希源 is characteristic of China, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and Thailand. Not in comparison with a country's population, the name is most common in China, Malaysia, and the United States. Predominantly, 希源 is the forename as well as the last name.