Family name Olleza (Olleza 
) , worldwide, is a very rare cognomen. The cognomen Olleza is habitual in South-eastern Asia, particularly Philippines, where it is a very rare surname. Very seldom, Olleza is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olleza | Philippines |
Julieta, Estrella, Leilani Grace, and Edgar Allan