Cognomen Plejo (Plejo 
) , all over the world, is a rare last name. The last name Plejo is characteristic of Serbia, where it is quite a rare surname, Peru, where it is a rare surname, and Croatia. Very seldom, Plejo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Plejo | Serbia, Peru, Brazil, Croatia |