Icelandic Last Name Generator

Icelanders use patronymics, not family names

Iceland is the one Nordic country where the old system never stopped. A child's last name is formed from a parent's first name, so the son of Jón is Jónsson and his daughter is Jónsdóttir. Their own children will not be Jónsson; they take a new name from their father or mother. A family of four can easily have four different last names, and nobody in Iceland finds that unusual or confusing.

Because the last name says so little about lineage, Icelanders address each other by first name, even the prime minister, and the national phone directory is sorted by first name. Names built on the mother's name are also legal and increasingly common, so a son of Helga can be Helguson. Since 2019, people registered as non-binary may use the ending -bur, meaning child of, instead of -son or -dóttir.

How to form an Icelandic last name

Take the parent's first name, put it in the genitive case, and add -son or -dóttir. For many names the genitive simply adds an s: Jón gives Jónsson, Einar gives Einarsson and Magnús gives Magnússon. Names ending in -ur drop that ending first, so Ólafur becomes Ólafsson. Names ending in -i usually take -a instead, so Helgi gives Helgason and Helgadóttir, and Bjarni gives Bjarnason and Bjarnadóttir.

Some names need more care. Sigurður gives Sigurðsson, Guðmundur gives Guðmundsson and Kristján gives Kristjánsson. For a mother's name, Guðrún becomes Guðrúnardóttir and Anna becomes Önnudóttir, because the genitive changes the vowel. If you are writing an Icelandic character, choose the father's or mother's first name before anything else, then build the last name from it. The meaning shown with each result names the parent it comes from.

Rare family names in the Icelandic last name generator

A small number of Icelanders do carry inherited family names. Most were adopted in the nineteenth and early twentieth centuries by educated or merchant families influenced by Danish custom, such as Thors, Blöndal, Briem, Thoroddsen and Hafstein. The writer Halldór Laxness took his name from the farm where he grew up. A law of 1925 banned the creation of new family names, so these older ones are now a distinctive minority.

Use the generator to mix the two types realistically. In a Reykjavík office you would expect nearly all patronymics and perhaps one family name. Set ends with to dóttir for women's names or son for men's. Letters like ð (the soft th in this) and þ (the hard th in thin) belong to the alphabet, so keep them. Add a first name like Sigrún or Gunnar, then copy, save or share your list.