Surname Кольо (Kolo 
, Кольо 
, Kolyo 
) , globally, is a common last name. The cognomen Кольо is characteristic of Bulgaria, where it is quite a common surname, Nigeria, and the Democratic Republic of the Congo, where it is quite a rare surname. Also, Кольо is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kolo | Bulgaria, Indonesia, Ivory Coast, Nigeria, Democratic Republic of the Congo |
| Кольо | Russia, Bulgaria, Ukraine |
| Kolyo | Bulgaria, India, Greece, South Africa, United States |
| Koliu | Malaysia, Myanmar, India, United States, Nigeria |