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