Last name Irastortza (Irastortza 
) , around the world, is a very rare family name. The last name Irastortza is habitual in Portugal, where it is a rare surname, Spain, where it is a very rare surname, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Irastortza | Portugal, Brazil, Spain, United Kingdom |
|
tere irastortza Basque writer, ES (b. 1961) |
|
| aritz irastortza Spanish singer, ES (b. 1986) |
|