Surname Irzo (Irzo 
) , in all the world, is an extremely rare family name. The family name Irzo is habitual in Venezuela, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, Irzo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Irzo | Brazil, Venezuela, United States, Spain |