Family name Kairas (Kairas 
) , worldwide, is a very rare last name. The surname Kairas is habitual in Greece, where it is a rare surname, Thailand, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, it is commonest in Greece, Thailand, and India. Likewise, Kairas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kairas | India, Greece, United States, Thailand |