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 | Finland, Brazil, India, Bolivia, United States |
| Serpa | Brazil, Peru, Bolivia, India, Colombia |
| Siraba | Mali, Spain, India, Venezuela, United States |