Last name แก่นกาญจน์ (Kaenkan 
, แก่นกาญจน์) , throughout the world, is a very rare cognomen. The family name แก่นกาญจน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, แก่นกาญจน์ is the forename as well as the last name.