Family name Железны (Железны 
, Zhelezny 
) , in all the world, is a very rare cognomen. The cognomen Железны is habitual in Belarus, where it is a rare surname, Russia, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Железны | Russia |
| Zhelezny | Russia, United States, Belarus |