Cognomen Йоуни (Jouni 
, Йоуни 
, Ioouni 
) , across the world, is quite a common surname. The cognomen Йоуни is characteristic of Lebanon, where it is quite a common surname, Malta, and Cyprus, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Lebanon, Algeria, and Syria. Likewise, Йоуни is the forename as well as the last name.