It is common to use a placename preceded by 'í' - in, 'á' - at or 'av' - from, in order to distinguish between the many Danish surnames ending in '-sen' - son.
| Aagard | Andreassen | Arge |
| Arrheboe | Bærentsen | Barthel |
| Blak | Bleken | Boman |
| Bóndi | Børresen | Broberg |
| Bronck | Dahl | Danielsen |
| Danjalsson | Debes | Djurhuus |
| Effersøe | Eidesgaard | Evensen |
| Finsen | Ganting | Glerfoss |
| Gulbranson | Hammershaimb | Hansen |
| Haraldsen | Hátun | Heinesen |
| Høgnesen | Holdremyr | Hoydal |
| Isaksen | Jakobsen | Jákupsson |
| Jensen | Joensen | Jóhansen |
| Justinussen | Kamban | Kielberg |
| Knudsen | Krogh | Kruse |
| Landt | Lisberg | Long |
| Lützen | Lyngbye | Matras |
| Mikines | Mikkelsen | Mohr |
| Nansen | Niclasen | Nielsen |
| Nolsøe | Nólsoy | Ólavsson |
| Olsen | Patursson | Petersen |
| Pløyen | Poulsen | Rasmussen |
| Reginsson | Reinert | Restorff |
| Rønne | Rønning | Rosenmeyer |
| Ryberg | Schrøter | Sørensen |
| Taalle | Thomsen | Torfasen |
This collection of names was compiled by Kate Monk and is ©1997, Kate Monk.
Copies may be made for personal use only.