Cognomen يانكو (Janko 
, Iancu 
, Yanko 
) , globally, is a common surname. The surname يانكو is habitual in Romania, where it is a common surname, Slovenia, where it is quite a common surname, and North Macedonia (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Romania, Hungary, and the United States. Likewise, يانكو is the forename as well as the last name.