Last name Olgera (Olgera 
) , all around the world, is a rare cognomen. The surname Olgera is characteristic of Ethiopia, where it is a very rare surname, Philippines, and Argentina, where it is an extremely rare surname. More prevalently, Olgera is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olgera | Ethiopia, Philippines, Mexico, United States, Democratic Republic of the Congo |