Cognomen Ardennis (Ardennis 
) , in the entire world, is an extremely rare surname. The last name Ardennis is habitual in Latin America and the Caribbean, particularly Venezuela, where it is an extremely rare surname. Much more prevalently, Ardennis is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ardennis | United States, India, Venezuela, Philippines |