Cognomen 宇欣 (Yuxin 
, 宇欣 ) , throughout the world, is quite a rare last name. The family name 宇欣 is characteristic of Singapore, where it is a rare surname, China, and Malaysia. Not in comparison with a country's population, it is the most numerous in China, Indonesia, and Malaysia. Much more frequently, 宇欣 is the forename as well as the last name.