Cognomen سيربا (Sirpa 
, Serpa 
, Siraba 
) , in the entire world, is a common surname. The cognomen سيربا is characteristic of Bolivia, where it is quite a common surname, Portugal, and Colombia. In absolute terms, it is commonest in Brazil, India, and Colombia. Very seldom, سيربا is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sirpa | Bolivia, Finland, United States, India, Brazil |
| Serpa | Bolivia, Peru, Colombia, India, Brazil |
| Siraba | Spain, United States, Mali, India, Venezuela |