Last name Käär (Käär 
) , in all the world, is a very rare cognomen. The surname Käär is characteristic of Northern Europe, particularly Estonia, where it is quite a rare surname, and Finland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Käär | Estonia, Finland |
| eira käär Finnish ceramist, FI (b. 1918) |
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| harri käär Estonian engineer, EE (b. 1944) |
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| leonhard käär Estonian politician, EE |
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| miia käär FI |
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