Cognomen In-Sung (인성 
, In-Sung 
) , around the globe, is an extremely rare surname. The cognomen In-Sung is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, In-Sung is the forename as well as the last name. Parts of the name also exists independently as a last name In, and a last name Sung.