Neilsen
surname · Latin script
Meaning: Altered spelling of Nielsen or Nilsen (Dictionary of American Family Names)
(measured from records)Officially recorded in 5 countries · latest register: Census Bureau, 2020
Neilsen is a surname written in the Latin script, with more bearers in Denmark than in any other country, where it is the most common surname. Neilsen is also written นีลเซ่น in Thai, Νιλσεν in Greek and 닐슨 in Korean (Hangul).
- DKDenmark1 in 26as Nielsen(measured from records)
- GLGreenland1 in 43as Nielsen
- NONorway1 in 58as Nilsen
carrying the name, as counted by its national register where one exists and as Mondonomo estimates it elsewhere (marked ≈ and "est." on hover). Where a country counts another spelling of the name rather than Neilsen itself, the figure is that spelling’s, and it is named. One hue, darker where it is more common; hover a country for its figure.
- Denmark (measured from records)
- 4 (measured from records)
- Record sources
- 411 (measured from records)
- 1 in 26 (inferred from the name graph)
222,355 named Nielsen
recorded for this name
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Denmark, as Nielsen
measured from records inferred from the name graph
Neilsen in other scripts: Latin, Thai, Greek and 1 more
(measured from records)Locally spelled Nielsen in DK Denmark, GL Greenland, Nilsson in SE Sweden, BJ Benin, Nielson in US United States and Nilsen in NO Norway.
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
(measured from records)Altered spelling of Nielsen or Nilsen.
Cited for this meaning 1
- Dictionary of American Family Names
Where the surname Neilsen is found
(measured from records)Neilsen 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 | ||||
|---|---|---|---|---|---|---|
| DK Denmark | #1 | 222,355as Nielsen | 1 in 26 | 222K | Nielsen | 277 |
| SE Sweden | #3 | 145,463as Nilsson | 1 in 70 | 145K | Nilsson | 219 |
| NO Norway | #4 | 94,971as Nilsen | 1 in 58 | 95K | Nilsen | 148 |
| US United States | #911 | 42,773as Nielsen | 1 in 7.8K | 43K | Nielson | 411 |
| BJ Benin | #4 | ≈26,000 est. | ≈1 in 550 | — | Nilsson | 10 |
| GL Greenland | #82 | 1,346as Nielsen | 1 in 43 | 1.3K | Nielsen | 29 |
222,355 people counted by Danmarks Statistik — Hvor mange hedder...? (living-population name counts). 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; Danmarks Statistik — Hvor mange hedder...? (living-population name counts); Skatteverket — Sök hur många som har ett visst namn (living population); SSB — Navnesøk (name-search service, living population); Statistics Greenland — Surnames (NAXT1). 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)- Philip Neilsenb. 1949AUAustralian poet
- Vibeke Neilsenb. 1959DKDanish cricketer
- Jade Neilsenb. 1991AUAustralian swimmer, Olympic silver medallist
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)11 registers and reference works attest this spelling, across 5 countries.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- What does the name Neilsen mean, and where does it come from?
- Altered spelling of Nielsen or Nilsen. Recorded by Dictionary of American Family Names.
- Which countries have the most people with the surname Neilsen?
- In Denmark, the national register counted about 222 thousand people named Nielsen, more than in any other country we hold. After it come Sweden, Norway, United States and Benin; the country table on this page ranks them.
- Where is Neilsen most common?
- No national register we hold counts the spelling Neilsen itself. The densest figure for its family of spellings is Denmark's: the national register counts about 1 in 26 people named Nielsen.
- How common is the name Neilsen?
- In Denmark, the national register counted 222,355 people named Nielsen, about 1 in 26 residents.
- How common is Neilsen compared with other names?
- In Denmark, Neilsen is the most common surname of 88,366 surnames recorded there.
What do you want to know about Neilsen?
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/neilsenThe 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, “Neilsen” — ranked first in Denmark (Danmarks Statistik). Data snapshot 2026-10-13.