| Sg | Pl | |
| Nom | landsmaðr | landsmenn (rule) |
| Acc | landsmann (rule) | landsmenn (rule) |
| Dat | landsmanni (rule) | landsmönnum (rule) |
| Gen | landsmanns (rule) | landsmanna (rule) |
| Sg | Pl | |
| Nom | landsmaðrinn (rule) | landsmennnir (rule) |
| Acc | landsmanninn (rule) | landsmennina (rule) |
| Dat | landsmanninum (rule) | landsmönnunum (rule) |
| Gen | landsmannsins (rule) | landsmannanna (rule) |