Throughout the world, Dumortier (Dumortier 
) is a very rare gender-neutral forename. The forename Dumortier is characteristic of France, where it is a very rare unisex name, and China, where it is an extremely rare epicene name. Predominantly, Dumortier is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Dumortier | Belgium, Switzerland, United States, Argentina, France |
Du Mortier, and Думортиер
|
barthélemy charles joseph dumortier Belgian politician and botanist (1797-1878), BE (b. 1797) |
|