Cognomen Jergan (Jergan 
) , around the globe, is a rare family name. The last name Jergan is characteristic of Croatia, where it is quite a rare surname, Norway, where it is a rare surname, and Malaysia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Croatia, Malaysia, and France. Much less frequently, Jergan is the forename as well as the last name.