Tønnessen

surname · Latin script

(measured from records)Officially recorded in 6 countries · latest register: Statistics Greenland, 2021

/tøːnːɛsːn̩/(machine-generated) Norwegian · model-generated

Say it in

Tønnessen is a surname written in the Latin script, with more bearers in Norway than in any other country.

  • NONorway1 in 1.4K(measured from records)
  • GLGreenland1 in 1.8K
  • DKDenmark1 in 309K

carrying the name, as counted by each country's national register. 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.

Norway (measured from records)

4,010 people

Record sources
27 (measured from records)

corpus datasets behind its best-documented spelling

strongest: highest-authority source

1 in 1.4K (inferred from the name graph)

Norway

measured from records inferred from the name graph

Spellings & scripts

(measured from records)
ToennessenLatin(measured from records)

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 in 1 language in the etymology graph.

Where in the world

(measured from records)

Tønnessen 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 Tønnessen is recorded, by country
CountryMost common spellingSources
NO Norway4,0101 in 1.4K4KTønnessen16
GL Greenland321 in 1.8K32—1
DK Denmark191 in 309K19Tønnessen7
SE Sweden31 in 3.4M3——
BE Belgium31 in 3.9M3—2

4,010 people counted by SSB — Navnesøk (name-search service, 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: SSB — Navnesøk (name-search service, living population); Statistics Greenland — Surnames (NAXT1); Danmarks Statistik — Hvor mange hedder...? (living-population name counts); Skatteverket — Sök hur många som har ett visst namn (living population); Familienaam.be — Belgian family-name frequency (population register). 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)
19001920194019601980Johan Nicolay Tønnessen, b. 1901Herman Tønnessen, b. 1918Liv Kari Bondevik Tønnessen, b. 1936Terje Tønnessen, b. 1949Aud Valborg Tønnessen, b. 1964Tyra Bondevik Tønnessen, b. 1967Rune Tønnessen, b. 1967Espen Tønnessen, b. 1970Anne Tønnessen, b. 1974Truls Hallberg Tønnessen, b. 1975

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)
FormalKjære ,Dear Tønnessen, (English)
InformalKjære ,Hello, (English)

Evidence

(measured from records)

9 registers and reference works attest this spelling, across 6 countries.

Reference works 3

  • Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
  • 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 Tønnessen?
In Norwegian /tøːnːɛsːn̩/. Transcriptions are machine-generated except where a dictionary is named.
In which country does Tønnessen have the most bearers?
In Norway, the national register counted about 4.0 thousand people named Tønnessen, more than in any other country we hold, where it is most often spelled tønnessen.
Where is Tønnessen most common?
Tønnessen is densest in Norway, where the national register counts about 1 in 1.4 thousand people carrying it.
How common is the name Tønnessen?
In Norway, the national register counted 4,010 people named Tønnessen, about 1 in 1.4 thousand residents.

What do you want to know about Tønnessen?

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Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/t%C3%B8nnessen

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, “Tønnessen”. Data snapshot 2026-10-13.

See how Tønnessen parses inside a full name →