Family name Hróarsson (Hróarsson 
) , across the world, is an extremely rare cognomen. The cognomen Hróarsson is habitual in Northern Europe, particularly Iceland, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hróarsson | Iceland |
| sleitu-björn hróarsson (b. 890) |
|
|
| önundur hróarsson (b. 894) |
|