Family name Девьятов (Девьятов 
, Deviatov 
) , in the entire world, is a very rare cognomen. The cognomen Девьятов is habitual in Hungary, where it is a rare surname, Russia, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Девьятов | Russia |
| Deviatov | Hungary, Russia, United States |