Family name Исаиан (Isaian 
, Исаиан 
) , in the world, is a very rare cognomen. The family name Исаиан is habitual in Georgia, where it is a very rare surname, Russia, and Nigeria. In absolute terms, it is commonest in Nigeria, Russia, and the United States. Also, Исаиан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isaian | South Africa, Nigeria, Canada, United States, India |
| Исаиан | Russia |