Cognomen Démier (Démier 
) , in the world, is an extremely rare surname. The family name Démier is characteristic of Western Europe, particularly France, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Démier | France |
| francis démier French historian (b. 1945) |
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| catherine démier French official, FR (b. 1957) |
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| philippe démier (b. 1960) |
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