Surname Liavon (Леон 
, Liavon 
) , in the world, is a rare cognomen. The surname Liavon is characteristic of Bulgaria, where it is quite a rare surname, Armenia, and Ukraine, where it is a rare surname. Not in comparison with a country's population, this name is the most popular in Eastern Europe, particularly Russia, Ukraine, and Bulgaria. More frequently, Liavon is the forename as well as the last name.