Surname Decartes (Decartes 
) , throughout the world, is a very rare family name. The surname Decartes is characteristic of Belgium, where it is a rare surname, France, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Decartes is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Decartes | Brazil, Belgium, United States, France |