Björnsson
surname · Latin script
(measured from records)Officially recorded in 6 countries
/pjœr̥sɔn/(machine-generated) Icelandic · model-generated
Björnsson is a surname written in the Latin script, with more bearers in Iceland than in any other country, where it is the 15th most common surname.
- ISIceland≈1 in 310few records(inferred from the name graph)
- SESweden1 in 12K
- DKDenmark1 in 62K
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Countries with no figure are shown too: flat where a national register lists the name without counting it, hatched where only our records hold it. One hue, darker where it is more common; hover a country for its figure.
- Iceland (inferred from the name graph)
- Record sources
- 95 (measured from records)
- ≈1 in 310 (inferred from the name graph)
≈1,200 people, est.
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Iceland, est.
measured from records inferred from the name graph
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 the surname Björnsson is found
(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.
| Country | Most common spelling | Sources | ||||
|---|---|---|---|---|---|---|
| IS Iceland | #15 | ≈1,200 est. | ≈1 in 310 | 4 | Björnsson | 69 |
| SE Sweden | — | 865 | 1 in 12K | 865 | Björnsson | 29 |
| BJ Benin | — | ≈290 est. | ≈1 in 50K | — | Björnsson | 2 |
| US United States | — | 111 | 1 in 3M | 111 | Bjornsson | 95 |
| DK Denmark | — | 94 | 1 in 62K | 94 | Björnsson | 20 |
| NO Norway | — | ≈42 est. | ≈1 in 133K | — | Björnsson | 6 |
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).
Notable people with this name
(measured from records)- Olof Björnssonb. 1000SEsemi-legendary Swedish king
- Helgi Björnssonb. 1958ISIcelandic singer and film actor
- Hjörleifur BjörnssonISIcelandic actor
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)Evidence
(measured from records)10 registers and reference works attest this spelling, across 6 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- How do you pronounce Björnsson?
- In Icelandic /pjœr̥sɔn/. Transcriptions are machine-generated except where a dictionary is named.
- Which countries have the most people with the surname Björnsson?
- Mondonomo estimates about 1.2 thousand people named Björnsson in Iceland, more than in any other country we hold, where it is most often spelled björnsson. After it come Sweden, Benin, United States and Denmark; the country table on this page ranks them.
- 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?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/bj%C3%B6rnssonThe 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 2026-10-13.