Jónsson and Jónsdóttir: Why Most Icelanders Don't Have Family Names
In Iceland, a unique patronymic system prevails. Instead of inheriting a family surname, Icelanders' last names are derived from their father's (or mother's) first name, followed by '-son' for a son or '-dóttir' for a daughter. A family of four can have four different last names.

Imagine looking at a family photo. There’s a father, a mother, a son, and a daughter. In most parts of the world, you would expect at least three of them to share a last name. But in Iceland, it’s entirely possible—and in fact, common—for all four to have different last names. This isn't due to divorce or complex marriages; it's the result of a fascinating naming tradition that connects individuals directly to their parents rather than a long ancestral line.
How It Works: The 'Son' and 'Dóttir' System
The Icelandic system is primarily patronymic, meaning it's based on the father's name. A person's 'last name' isn't a family name but is instead composed of their father's first name in the genitive case, followed by a suffix indicating their gender: -son (for a son) or -dóttir (for a daughter).
Let's take an example. If a man named Jón Einarsson has a son named Ólafur and a daughter named Katrín, their full names would be:
- Ólafur Jónsson (Ólafur, son of Jón)
- Katrín Jónsdóttir (Katrín, daughter of Jón)
Notice their 'last names' derive from Jón's first name, not his surname 'Einarsson' (which itself just means he is the son of Einar). Their mother, perhaps named Bryndís Atladóttir, also has her own unique last name from her father, Atli. This creates a family where every member's name tells a story of their immediate parentage.
A Living Piece of History
This method of naming was once common throughout Scandinavia. However, as these nations modernized and interacted more with the rest of Europe, they gradually adopted fixed, inheritable family surnames. Iceland, due to its geographic isolation and strong commitment to cultural preservation, maintained the ancient system. It's a direct, living link to the Viking Age. Because of this, telephone directories and official registries in Iceland are alphabetized by first name, as the last name is more of a descriptor than a primary identifier.
Social Norms and Modern Challenges
In Iceland, addressing someone by their first name is the norm, regardless of their age, status, or title. You would refer to the former president, Guðni Th. Jóhannesson, simply as Guðni. This fosters a sense of egalitarianism deeply ingrained in the culture. However, the system can cause confusion abroad, where forms and databases are built around the concept of a shared family name.
Many Icelanders traveling or living abroad have encountered the challenge of explaining their name. The concept of a 'family name' is so ingrained in most cultures that it can be difficult to clarify that 'Jónsson' isn't the family's name, but simply a label meaning 'Jón's son.' It identifies a single generation's connection, not a dynasty.
Evolution: Matronymics and Gender Neutrality
The system is not static. In recent decades, matronymic naming—using the mother's name as the base—has become more common. A child might be given a matronymic name if the parents wish to honor the mother, if the father is not in the picture, or as a statement of gender equality. Furthermore, in 2019, Iceland's parliament passed the Gender Autonomy Act, which, among other things, officially introduced a gender-neutral suffix: -bur, meaning 'child of.' This allows individuals who identify as non-binary to have a name that reflects their identity, showing how this ancient tradition continues to adapt to the modern world. It’s a beautiful system where your name is your own personal story, connecting you not to a clan, but directly to the parent who gave you life.