Surname Rungen (润根 
, Rungen 
) , in all the world, is a rare cognomen. The cognomen Rungen is characteristic of Mauritius, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and New Zealand, where it is a rare surname. Measured by absolute frequency, this name is the most popular in China, Mauritius, and Germany. More frequently, Rungen is the forename as well as the last name.