Last name Decottignies-Gillet (Decottignies-Gillet 
) , around the world, is an extremely rare family name. The family name Decottignies-Gillet is habitual in Western Europe, particularly France, where it is an extremely rare surname. Parts of the name also exists independently as a last name Decottignies, and a last name Gillet.
| VARIANT | COUNTRY |
|---|---|
| Decottignies-Gillet | France |