Last name Gernis (Gernis 
) , all over the world, is an extremely rare family name. The cognomen Gernis is habitual in Latin America and the Caribbean, particularly Venezuela, where it is a very rare surname, and Honduras. Predominantly, Gernis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gernis | South Africa, Democratic Republic of the Congo, Dominican Republic, India, Venezuela |