Family name Tjana (Тяна 
, تجانى 
, Tjana 
) , worldwide, is quite a rare last name. The surname Tjana is characteristic of Bulgaria, where it is quite a common surname, Sudan, where it is quite a rare surname, and Slovenia, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Bulgaria, Sudan, and Indonesia. Also, Tjana is the forename as well as the last name.