Last name Biternas (Biternas 
) , in all the world, is a very rare surname. The cognomen Biternas is habitual in Greece, where it is a rare surname, Venezuela, where it is a very rare surname, and Chile, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Greece, Venezuela, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Biternas | Greece, Chile, United States, Venezuela |