| Sg. Indef. | landsvegur |
| Sg. Def. | landsvegurin |
| Pl. Indef. | landsvegir |
| Pl. Def. | landsvegirnir |
| Sg. Indef. | landsvegar |
| Sg. Def. | landsvegarins |
| Pl. Indef. | landsvega |
| Pl. Def. | landsveganna |
| Sg. Indef. | landsveg; landsvegi |
| Sg. Def. | landsvegnum; landsveginum |
| Pl. Indef. | landsvegum |
| Pl. Def. | landsvegunum |
| Sg. Indef. | landsveg |
| Sg. Def. | landsvegin |
| Pl. Indef. | landsvegir |
| Pl. Def. | landsvegirnar |