Last name 長南 (Chonan 
, Tyonan 
, 長南) , in the entire world, is a rare family name. The cognomen 長南 is characteristic of Indonesia, where it is a very rare surname, South Africa, and Malaysia, where it is an extremely rare surname. In absolute terms, the name is most common in Indonesia, China, and South Africa. Much more prevalently, 長南 is the forename as well as the last name.