Family name Pedro Olegario (Pedro Olegario 
) , all around the world, is a very rare last name. The cognomen Pedro Olegario is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More prevalently, Pedro Olegario is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pedro Olegario | Argentina, Spain, Ecuador, Chile, Peru |