Thomasson
surname · Latin script
Meaning: A surname originating as a patronymic
Recorded for both men and women· direction only, no split published
/ˈtɑməsən/(machine-generated) pronunciation, model-generated
Thomasson is a surname written in the Latin script, with more bearers in China than in any other country.
- SESweden1 in 7.8K(measured from records)
- GBUnited Kingdom≈1 in 54K
- USUnited States1 in 69K
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.
- China (inferred from the name graph)
- Sources
- 322 (measured from records)
- 1 in 7.8K (inferred from the name graph)
≈11,000 people, est.
Highest-authority source
Sweden
measured from records inferred from the name graph
Meaning & origin(measured from records)
A surname originating as a patronymic.
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Thomasson 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 | ||||
|---|---|---|---|---|---|---|
| CN China | — | ≈11,000 est. | ≈1 in 129K | — | Thomasson | 3 |
| US United States | — | 4,844 | 1 in 69K | 4.8K | Thomasson | 322 |
| SE Sweden | #317 | 1,301 | 1 in 7.8K | 1.3K | Thomasson | 69 |
| FR France | — | ≈1,300 est. | ≈1 in 53K | 137 | Thomasson | 3 |
| GB United Kingdom | — | ≈1,200 est. | ≈1 in 54K | 1.2K | Thomasson | 117 |
| FI Finland | — | 276 | 1 in 20K | 276 | Thomasson | 10 |
| IS Iceland | — | ≈8 est. | ≈1 in 46K | 1 | Thomasson | 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; Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register); Skatteverket — Sök hur många som har ett visst namn (living population); DVV — Nimipalvelu (Finnish name service, per-name lookup); INSEE — Fichier des noms de famille (1891–2000); Þjóðskrá Íslands — Name frequencies (NafnTíðni, registry). 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)
- William Thomassonb. 1797USAmerican politician (1797-1882)
- John Pennington Thomassonb. 1841GBBritish politician
- Lisa Thomassonb. 1878SESwedish singer
- Väinö Tannerb. 1881FInot in their usual nameFinnish politician, Prime Minister of Finland (1881–1966)
- Sarah Thomassonb. 1925SESaami alpine skier from Sweden
- Gary Thomassonb. 1951USAmerican baseball player
- Amie Thomassonb. 1968USAmerican philosopher
- Kelly Thomassonb. 1979USAmerican politician (1979-)
- Adrien Thomassonb. 1993FRFrench footballer (born 1993)
- Joe Thomassonb. 1993USGeorgian basketball player (born 1993)
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)
Attested in 28 sources across 17 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 4.8K | #6,926 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 4.6K | #6,746 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 4.4K | #7,306 |
| SE Sweden | Skatteverket — Sök hur många som har ett visst namn (living population) | — | 1.3K | #784 |
| GB United Kingdom | Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register) | 2002 | 1.2K | #5,880 |
| FI Finland | DVV — Nimipalvelu (Finnish name service, per-name lookup) | — | 276 | #5,758 |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1941 | 224 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1951 | 202 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1961 | 185 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1971 | 177 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1921 | 174 | — |
| FR France | INSEE — Fichier des noms de famille (1891–2000) | 1931 | 148 | — |
Reference works 5
- The Oxford Dictionary of Family Names in Britain and Ireland
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia surname tokens
- Wikidata name items (native-script + romanized given/family names)
- jeantosti.com — Dictionnaire des noms de famille de France et d'ailleurs (Jean Tosti)
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
- What does the name Thomasson mean, and where does it come from?
- A surname originating as a patronymic. Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- How do you pronounce Thomasson?
- A machine transcription gives /ˈtɑməsən/ (IPA) for English.
- In which country does Thomasson have the most bearers?
- Mondonomo estimates about 11 thousand people named Thomasson in China, more than in any other country we hold, where it is most often spelled thomasson.
- Where is Thomasson most common?
- Measured as a share of residents rather than as a count, Thomasson is densest in Sweden — about 1 in 7.8 thousand people — even though China holds more of our records for it.
- How common is the name Thomasson?
- In the United States, the national register counted 4,844 people named Thomasson in 2010, about 1 in 69 thousand residents.
- How common is Thomasson compared with other names?
- In Sweden, Thomasson is the 317th most common surname of 187,334 surnames recorded there.
What do you want to know about Thomasson?
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/thomassonThe 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, “Thomasson” — the 317th most common surname in Sweden. Data snapshot 2026-10-10.