Family name Ernay (Ernay 
) , in the world, is a very rare cognomen. The cognomen Ernay is habitual in Honduras, where it is a very rare surname, Venezuela, and the United States, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in the United States, Venezuela, and Mexico. Also, Ernay is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ernay | Mexico, Spain, Brazil, Venezuela, United States |