Family name Hietajärvi (Hietajärvi 
) , in the entire world, is a very rare cognomen. The last name Hietajärvi is habitual in Northern Europe, particularly Finland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hietajärvi | Finland |
| matti hietajärvi Finnish cyclist, FI (b. 1976) |
|
|
| lauri ville oskari hietajärvi researcher |
|