Surname Hynni (Hynni 
) , around the globe, is a very rare family name. The cognomen Hynni is habitual in Northern Europe, particularly Finland, where it is a rare surname. Very seldom, Hynni is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hynni | Finland, Spain |
| pertti hynni Finnish water polo player, FI (b. 1960) |
|