Family name Demeillez (Demeillez 
) , around the globe, is a rare cognomen. The last name Demeillez is habitual in France, where it is a rare surname, and Canada, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Demeillez | France, Canada |
| charles demeillez French association football player, FR (b. 1953) |
|