Last name Krepkaia (Krepkaia 
, Крепкая 
) , across the world, is a rare cognomen. The family name Krepkaia is characteristic of Belarus, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Krepkaia | Georgia |
| Крепкая | Kazakhstan, Russia, Ukraine, Belarus |