Family name Ernewein (Ernewein 
) , around the globe, is a rare cognomen. The surname Ernewein is characteristic of France, where it is a rare surname, Canada, and Czechia. Measured by absolute frequency, it is the most numerous in France, Canada, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Ernewein | Canada, Czechia, France, United States, Germany |