Cognomen Клео (Cleo 
, Kleo 
, Cléo 
) , in all the world, is quite a rare surname. The cognomen Клео is characteristic of Albania, where it is quite a rare surname, Malaysia, and North Macedonia, where it is a rare surname. Not in comparison with a country's population, the name is most common in Indonesia, Malaysia, and Cameroon. More frequently, Клео is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cleo | Brazil, Philippines, Canada, United States, Indonesia |
| Kleo | Brazil, Philippines, Albania, United States, Indonesia |
| Cléo | Brazil, France, Canada, United States, Democratic Republic of the Congo |
| Клео | Russia, Bulgaria, Kyrgyzstan |