Family name Stepanjan (Степанян 
, Stepanjan 
) , in all the world, is a common surname. The cognomen Stepanjan is characteristic of Russia, where it is quite a rare surname, Belarus, and Estonia. In absolute terms, it is the most numerous in Eastern Europe, particularly Russia, Ukraine, and Belarus. Likewise, Stepanjan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Степанян | Kazakhstan, Armenia, Russia, Belarus, Ukraine |
| Stepanjan | Germany, Sweden, Estonia, Slovenia, Netherlands |
Stepanyan, Stepanyants, Степанйан, and Степаньянц
| nonna surenovna stepanjan (b. 1932) |
|
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| agop stepanjan SI (b. 1943) |
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