| Sg | Pl | |
| Nom | haugr | haugar (rule) |
| Acc | haug (rule) | hauga (rule) |
| Dat | haugi (rule) | haugum (rule) |
| Gen | haugs (rule) | hauga (rule) |
| Sg | Pl | |
| Nom | haugrinn (rule) | haugarnir (rule) |
| Acc | hauginn (rule) | haugana (rule) |
| Dat | hauginum (rule) | haugunum (rule) |
| Gen | haugsins (rule) | hauganna (rule) |