Last name 蔚欣 (Weixin 
, 蔚欣 ) , in the entire world, is a rare surname. The surname 蔚欣 is habitual in Taiwan, where it is a rare surname, Hong Kong, and Singapore. Measured by absolute frequency, it most frequently occurs in China, Taiwan, and Indonesia. Predominantly, 蔚欣 is the forename as well as the last name.