Cognomen Guchko (Guchko 
) , across the world, is a rare family name. The surname Guchko is characteristic of Afghanistan, where it is a rare surname, Spain, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. In absolute terms, it is the most numerous in Afghanistan, Spain, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Guchko | Afghanistan, Russia, Spain, Ukraine |