Last name Hróbjartsson (Hróbjartsson 
) , in the world, is a very rare family name. The last name Hróbjartsson is habitual in Iceland, where it is quite a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hróbjartsson | Iceland, United States |
| jón hróbjartsson (b. 1877) |
|
|
| asbjørn hróbjartsson Danish medical researcher. |
|