Last name Vaina (Vaina 
, Bayna 
, Война 
) , globally, is quite a common family name. The family name Vaina is characteristic of Lithuania, where it is quite a rare surname, Estonia, and Greece. Measured by absolute frequency, it is commonest in India, Ukraine, and Philippines. Also, Vaina is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vaina | India, Greece, Democratic Republic of the Congo, Italy, Brazil |
| Bayna | India, Morocco, United States, Philippines, Turkey |
| Война | Ukraine, Kazakhstan, Russia, Belarus, Bulgaria |
| Ваина | Russia, Belarus, Kazakhstan |
| františek vaina CZ (b. 1840) |
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| vladimír záboj vaina CZ (b. 1876) |
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| vladimír vaina Czechoslovakian rower (b. 1909) |
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| józef vaina PL (b. 1916) |
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| lucia maria vaina researcher |
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| sophia vaina researcher |
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| stanislovas kazimieras vaina |
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| mykolas vaina |
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