Cognomen Decone (Decone 
) , worldwide, is a very rare family name. The cognomen Decone is habitual in France, where it is an extremely rare surname, Germany, and Canada. Measured by absolute frequency, it most frequently occurs in France, Germany, and the United States. Much less frequently, Decone is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Decone | Canada, Philippines, United States, Germany, France |