Cognomen Гилько (Gilko 
, Гилько 
) , in all the world, is a rare last name. The last name Гилько is characteristic of Belarus, where it is a rare surname, Georgia, where it is a very rare surname, and Russia. Measured by absolute frequency, it is commonest in Russia, Belarus, and the United States. Likewise, Гилько is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gilko | Russia, Germany, Poland, United States, India |
| Гилько | Belarus, Ukraine, Russia, Kazakhstan |