Cognomen Jeko (Жеко 
, Jeko 
) , around the globe, is quite a rare surname. The cognomen Jeko is characteristic of Eastern Europe, particularly Bulgaria, where it is quite a common surname, Hungary, where it is quite a rare surname, and Belarus, where it is a rare surname. In absolute terms, it is the most numerous in Bulgaria, Bangladesh, and Indonesia. Likewise, Jeko is the forename as well as the last name.