Surname Yelko (Yelko 
) , all over the world, is a very rare cognomen. The cognomen Yelko is habitual in Myanmar, where it is a very rare surname, Honduras, and the United States, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Myanmar, the United States, and Venezuela. Also, Yelko is the forename as well as the last name.