Family name 怡君 (Yijun 
, 怡君 , Yi Jun 
) , worldwide, is quite a common cognomen. The surname 怡君 is habitual in Taiwan, where it is quite a rare surname, Singapore, and China, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in China, Taiwan, and Malaysia. More prevalently, 怡君 is the forename as well as the last name.