Family name Chadko (Chadko 
, Шадько 
) , around the world, is a rare surname. The cognomen Chadko is habitual in Azerbaijan, where it is quite a rare surname, Ukraine, where it is a rare surname, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Azerbaijan, Ukraine, and Russia. Very seldom, Chadko is the forename as well as the last name.