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Cognomen Klaos (Klaos
, Клаос
) , throughout the world, is a rare surname. The last name Klaos is habitual in Northern Europe, particularly Estonia, where it is quite a common surname, Denmark, where it is a very rare surname, and Finland. In absolute terms, it most frequently occurs in Estonia, Russia, and Denmark. Much less frequently, Klaos is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Klaos | Estonia, Brazil, Denmark, Finland, Germany |
| Клаос | Russia |