Cognomen Châtaignier (Châtaignier 
) , all around the world, is an extremely rare last name. The last name Châtaignier is characteristic of Western Europe, particularly France, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Châtaignier | France |
| maxime châtaignier French speed skater, FR (b. 1988) |
|