Cognomen Beterraba (Beterraba 
, Bēta 
) , across the world, is a very rare last name. The surname Beterraba is habitual in Latvia, where it is a rare surname, and Brazil, where it is an extremely rare surname. Very seldom, Beterraba is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Beterraba | Brazil |
| Bēta | Latvia |