Family name Hiriart-Urruty (Hiriart-Urruty 
) , around the world, is a very rare cognomen. The family name Hiriart-Urruty is habitual in Western Europe, particularly France, where it is a rare surname. Parts of the name also exists independently as a last name Hiriart, and a last name Urruty.
| VARIANT | COUNTRY |
|---|---|
| Hiriart-Urruty | France |
| jean-baptiste hiriart-urruty mathematician, FR (b. 1949) |
|