Cognomen Каснаускас (Каснаускас 
) , all over the world, is a very rare last name. The last name Каснаускас is habitual in Eastern Europe, particularly Ukraine, where it is a very rare surname, and Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Каснаускас | Russia, Ukraine |
| сяргей каснаускас Soviet-Belarusian male shot putter, BY (b. 1961) |
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