Family name Dainys (Dainys 
) , in all the world, is a rare last name. The family name Dainys is habitual in Lithuania, where it is quite a rare surname, Venezuela, where it is a rare surname, and the United Kingdom, where it is a very rare surname. Also, Dainys is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dainys | Cuba, United Kingdom, Lithuania, Venezuela, Colombia |
| balys dainys (b. 1941) |
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| gintautas dainys Lithuanian photographer, LT (b. 1969) |
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| evaldas dainys Lithuanian basketball player, LT (b. 1982) |
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