Surname Степаниантц (Степаниантц 
, Stepaniants 
) , in the world, is a very rare last name. The last name Степаниантц is habitual in Russia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Степаниантц | Russia |
| Stepaniants | United States |