Surname Ienaro (Ienaro 
) , in all the world, is a very rare cognomen. The cognomen Ienaro is habitual in Italy, where it is a rare surname, Argentina, where it is a very rare surname, and France. In absolute terms, it most frequently occurs in Italy, France, and the United States. Very seldom, Ienaro is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ienaro | Canada, France, Argentina, Italy, United States |