| Main index | Contents of Onomastikon |
| Scandinavian index | Other Norse and Scandinavian names |
| History | A short historical background |
| Norse | Names of Norse origin |
| Germanic | Names of Germanic origin |
| Biblical | Names of Biblical origin |
| Latin | Names of Latin origin |
| Greek | Names of Greek origin |
| Various | Names of Celtic origin, Compound names |
| Surnames | Icelandic surnames/patronymics |