Surname Ryadnova (Ryadnova 
, Ряднова 
) , throughout the world, is quite a rare cognomen. The family name Ryadnova is characteristic of Russia, where it is a rare surname, Ukraine, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Ryadnova | Russia, Ukraine |
| Ряднова | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |