Surname 欣欣 (欣欣 
, Xinxin 
) , throughout the world, is a common cognomen. The cognomen 欣欣 is characteristic of China, where it is quite a rare surname, Taiwan, where it is a rare surname, and Singapore. In absolute terms, it most frequently occurs in China, Taiwan, and Indonesia. More prevalently, 欣欣 is the forename as well as the last name.