Björnsson

surname · Latin script

/bj2:n`s`on/(machine-generated) pronunciation, model-generated

Björnsson is a surname written in the Latin script, with more bearers in Sweden than in any other country. In Iceland it is the 15th most common surname.

rarermore common
  • USUnited States1 in 3M(measured from records)
  • ISIceland≈1 in 3.2K
  • SESweden1 in 12K

carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). One hue, darker where it is more common; hover a country for its figure.

Sweden (measured from records)

865 people

Sources
95 (measured from records)

Highest-authority source

≈1 in 3.2K (inferred from the name graph)

Iceland, est.

measured from records inferred from the name graph

Name dossier (print, CSV)

Spellings & scripts(measured from records)

2 other spellings are counted as the same name:

Locally spelled Bjornsson in US United States.

Spellings marked ● are how people bearing the name write it in our records, and ○ marks a model's transliteration; click a spelling to open its page.

Meaning & origin

No verified etymology recorded for this name yet — the entries below are drawn from usage statistics and the name graph.

Attested across 13 languages in the etymology graph.

Where in the world(measured from records)

Björnsson counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.

Sorted by bearers: national registers' counts, and Mondonomo's estimates (≈, est.) where no register counts.

Where Björnsson is recorded, by country
CountryMost common spellingSources
SE Sweden—8651 in 12K865Björnsson29
BJ Benin—≈260 est.≈1 in 50K—Björnsson2
US United States—1111 in 3M111Bjornsson95
IS Iceland#15≈110 est.≈1 in 3.2K4Björnsson69
DK Denmark—941 in 62K94Björnsson20
NO Norway—≈33 est.≈1 in 164K—Björnsson6

865 people counted by Skatteverket — Sök hur många som har ett visst namn (living population). Exact figures are national registers' own counts, while figures marked ≈ and est. are Mondonomo’s estimates, counted from our sources and calibrated against those registers; hover one for how far to trust it in that country. A dash means neither exists.

Registers cited: Census Bureau — Surname Frequency 2010; Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry); Skatteverket — Sök hur många som har ett visst namn (living population); Danmarks Statistik — Hvor mange hedder...? (living-population name counts). Figures without a register are Mondonomo estimates; see Methodology.

Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).

Other names spelled this way(inferred from the name graph)

Björnsson is also recorded as 4 other names, grouped separately because the records behind them do not connect to the one described above.

  • a separate name3 spellings in the group

    Also written Bjórnsson, Bjornsson

  • Portuguese surname2 spellings in the group

    Most recorded in Brazil, Sweden, United States

    Also written Bjornsson

  • French surname2 spellings in the group

    Most recorded in France, Sweden, United States

    Also written Bjornsson

  • Hindi surname4 spellings in the group

    Most recorded in United States

    Also written Bjornsson

23 further groups record this spelling and are not listed here.

Grouping is the name graph's, not a register's: two spellings join a group when the evidence links them, so a group is a claim about the records rather than about the people.

Notable people with this name(measured from records)

100012001400160018002000Olof Björnsson, b. 1000Edvard Björnsson, b. 1878Arni Björnsson, b. 1905Ólafur Björnsson, b. 1912Árni Björnsson, b. 1932Helgi Björnsson, b. 1958Yngvi Bjornsson, b. 1964Kristinn Björnsson, b. 1972Davíð Bjarni Björnsson, b. 1998

The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).

How to address them(machine-generated)

FormalHej ,Dear Björnsson, (English)
InformalHej ,Hello, (English)

Evidence(measured from records)

Attested in 10 sources across 6 countries.

Official registers attesting Björnsson
CountryRegisterYearCountRank
SE SwedenSkatteverket — Sök hur många som har ett visst namn (living population)—865#1,147
DK DenmarkDanmarks Statistik — Hvor mange hedder...? (living-population name counts)—94#5,827
IS IcelandÆttarnöfn á Íslandi — register of Icelandic hereditary family names———

Reference works 2

  • Wikipedia surname tokens
  • Wikidata name items (native-script + romanized given/family names)

These works list the name; their figures are licensed and are not reproduced here.

Register rows as of the 2026-10-09 data build.

Frequently asked questions

How do you pronounce Björnsson?
A machine transcription gives /bj2:n`s`on/ (IPA) for Swedish.
In which country does Björnsson have the most bearers?
In Sweden, the national register counted about 865 people named Björnsson, more than in any other country we hold, where it is most often spelled björnsson.
How common is the name Björnsson?
In Sweden, the national register counted 865 people named Björnsson, about 1 in 12 thousand residents.
How common is Björnsson compared with other names?
In Iceland, Björnsson is the 15th most common surname of 9,400 surnames recorded there.

What do you want to know about Björnsson?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/bj%C3%B6rnsson

The payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.

About this data

measured from records inferred from the name graph machine-generated

These figures come from the data snapshot of and will change as it is rebuilt.

Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.

Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.

Cite this page Mondonomo, “Björnsson” — the 15th most common surname in Iceland. Data snapshot 2026-10-10.

See how Björnsson parses inside a full name →