Cognomen Olasagarre (Olasagarre 
) , all around the world, is a very rare last name. The last name Olasagarre is habitual in Argentina, where it is a very rare surname, Spain, and France, where it is an extremely rare surname. Much less frequently, Olasagarre is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Olasagarre | France, Germany, Spain, Argentina |
|
sagrario aranburu olasagarre musician, dancer and singer, ES (b. 1930) |
|
| veremunda olasagarre Spanish activist, ES (b. 1912) |
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| juanjo olasagarre Basque writer, ES (b. 1963) |
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