Last name Käro (Käro, Кяро 
) , worldwide, is a very rare cognomen. The last name Käro is habitual in Eastern Europe, particularly Belarus, where it is a very rare surname, Russia, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Кяро | Russia, Ukraine, Belarus |
|
kirill käro Estonian actor, EE (b. 1975) |
|
| volli käro Estonian actor, EE (b. 1940) |
|