Cognomen Iohann (Иван 
, Iohann 
) , around the globe, is a widespread family name. The surname Iohann is characteristic of Bulgaria, where it is a prevalent surname, Armenia, where it is quite a common surname, and Kyrgyzstan (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Bulgaria, Russia, and Kyrgyzstan. More frequently, Iohann is the forename as well as the last name.