Cognomen Хяникяйнен (Хяникяйнен 
) , in all the world, is a very rare surname. The family name Хяникяйнен is habitual in Russia, where it is a very rare surname, Kazakhstan, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Хяникяйнен | Kazakhstan, Russia, Ukraine |