Last name 索南 (Sonam 
, Sonnen 
, 索南 ) , worldwide, is a common family name. The last name 索南 is characteristic of Bhutan, where it is a common surname, Nepal, where it is quite a rare surname, and Mauritius. Not in comparison with a country's population, it is commonest in Southern Asia, particularly India, Bhutan, and Nepal. More prevalently, 索南 is the forename as well as the last name.