Family name Dainas (Dainas 
) , globally, is a rare cognomen. The surname Dainas is habitual in Greece, where it is a rare surname, the United States, where it is an extremely rare surname, and India. More frequently, Dainas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dainas | South Africa, United States, India, Greece, Democratic Republic of the Congo |