Cognomen Itxiar (Itxiar 
) , in all the world, is a very rare last name. The family name Itxiar is habitual in Spain, where it is a rare surname, Chile, where it is an extremely rare surname, and Venezuela. In absolute terms, it is commonest in Spain, Mexico, and Chile. More frequently, Itxiar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Itxiar | Spain, Mexico, Chile, United States, France |