Cognomen Kailos (Kailos 
) , throughout the world, is a rare family name. The family name Kailos is habitual in Cyprus, where it is quite a common surname, Greece, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Kailos is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kailos | Cyprus, United States, Nigeria, Greece, India |