Surname Dyonys (Дионис 
, Dyonys 
) , in the entire world, is a very rare cognomen. The family name Dyonys is characteristic of Bulgaria, where it is a rare surname, Armenia, and Kyrgyzstan, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Bulgaria, Russia, and Armenia. More frequently, Dyonys is the forename as well as the last name.