Cognomen In-Chan (인찬 
, In-Chan, อินทร์กับจันทร์ 
) , all around the world, is a very rare surname. The last name In-Chan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, In-Chan 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 Chan.