Throughout the world, Olaechea (Olaechea 
) is an extremely rare boy's forename. Predominantly, Olaechea is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Olaechea | Spain, Colombia, United States, Argentina, Peru |
| alonso ojeda olaechea Venezuelan politician (1918-2006), VE (b. 1918) |
|