Cognomen Орданян (Орданян 
, Ordanian 
) , in all the world, is a very rare family name. The surname Орданян is habitual in Russia, where it is a very rare surname, Ukraine, and Canada, where it is an extremely rare surname. Measured by absolute frequency, the name is most common in Russia, Ukraine, and the United States. Much less frequently, Орданян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Орданян | Russia, Ukraine, Armenia |
| Ordanian | United States, Canada |