Cognomen Cajeux (Cajeux 
) , around the world, is a very rare surname. The family name Cajeux is characteristic of Switzerland, where it is a rare surname, South Africa, where it is an extremely rare surname, and Brazil. Very seldom, Cajeux is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cajeux | Switzerland, South Africa, Brazil, United States |