Throughout the world, Arx (Arx 
, اركس 
) is a rare principally male, but scarcely girly forename. The given name Arx is habitual in Indonesia, where it is a very rare boy's name, Brazil, where it is an extremely rare boy's name, and China. More prevalently, Arx is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Arx | Germany, Indonesia, Switzerland, Taiwan, United States |
| اركس | Iraq |
| walther von arx (b. 1852) |
|