Family name Dynu (Дину 
, Dynu 
) , all over the world, is a rare cognomen. The cognomen Dynu is characteristic of Eastern Europe, particularly Romania, where it is a rare surname, Bulgaria, and Ukraine, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Russia, Romania, and Ukraine. Also, Dynu is the forename as well as the last name.