Cognomen Айдас (Aidas 
, Айдас 
, Aydas 
) , around the world, is a rare last name. The cognomen Айдас is habitual in Lithuania, where it is quite a rare surname, Denmark, where it is a rare surname, and Hungary. In absolute terms, it is the most numerous in Turkey, Germany, and India. More frequently, Айдас is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Aidas | United Kingdom, Ireland, United States, India, Lithuania |
| Айдас | Kazakhstan, Russia, Ukraine, Belarus |
| Aydas | Turkey, Germany, Denmark, United States, France |