Neptune
loc · Latin script
Meaning: The eighth planet in our solar system, represented in astronomy and astrology by ♆
Recorded for both men and women· direction only, no split published
Neptune is a name written in the Latin script, most frequently recorded in the United States.
- USUnited States
- GBUnited Kingdom
- RURussia
Where the name is found, darker where our sources hold more of it. No national register counts its bearers anywhere we hold data, so the map carries no figures. One hue, darker where it is more common; hover a country for its figure.
- United States (inferred from the name graph)
- Sources
- 250 (measured from records)
no count published
Highest-authority source
measured from records inferred from the name graph
Meaning & origin(measured from records)
The eighth planet in our solar system, represented in astronomy and astrology by ♆.
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 9 languages in the etymology graph.
Often considered alongside
Names that people choosing a name often weigh against Neptune, most often first. They share a style rather than an origin.
From the names suggested together in public name-advice forums, in English. A list of what people consider, not a measure of how common any name is.
Where in the world(measured from records)
Neptune counted together with the spellings and other-language forms grouped with it. Where a register counted another spelling, the row names it.
| Country | Most common spelling | Sources | ||
|---|---|---|---|---|
| US United States | — | 1.7K | Neptune | 250 |
| GB United Kingdom | — | 42 | Neptune | 47 |
| RU Russia | — | — | Neptune | 2 |
| CA Canada | — | 1 | Neptune | 41 |
| AU Australia | — | 1 | Neptune | 16 |
| VC St. Vincent & Grenadines | — | 79 | — | 1 |
| GD Grenada | — | 59 | — | 2 |
| GY Guyana | — | 32 | — | 2 |
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); Electoral Office of St Vincent & the Grenadines — Final Voters List (Nov 2025); Grenada — Consolidated List of Electors December 2025; Guyana — Official List of Electors July 2025; Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; SA BDM — Popular baby names South Australia (1944–present). 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 recorded senses(measured from records)
Neptune is also recorded in 5 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In French, Du nom latin Neptunus, le dieu romain de la mer.
as a nameDictionnaire des noms de famille du Canada français. Anthroponymie et généalogie. 2e édition
In English, Roman god of the sea; planet
as a namePronouncing Dictionary of Proper Names
unexplained.
as a nameDictionary of American Family Names
In French, Neptune (planet)
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
In Latvian, Jauna Eiropas programma tehnoloģiju izmantošanai izglītībā
as a wordTēzaurs.lv (Dictionary and Thesaurus of Latvian, AiLab / LU MII)
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- Old John Neptuneb. 1767Penobscot leader
- Mary Mae Neptuneb. 1872USprof. of English, Spelman College
- Marilise Neptune Rouzierb. 1945HTbiologist and ethnobotanist
- Neptun Bajkob. 1958ALnot in their usual nameAlbanian footballer
- Camilla Neptuneb. 1962SESwedish footballer
- Kyle Neptuneb. 1985USAmerican basketball player and coach (born 1985)
- Christie Neptuneb. 1986USAmerican artist
- Yavney NeptuneUSbasketball player
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).
Evidence(measured from records)
Attested in 17 sources across 11 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 1.7K | #17,033 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 1.6K | #16,930 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 1.5K | #17,128 |
| VC St. Vincent & Grenadines | Electoral Office of St Vincent & the Grenadines — Final Voters List (Nov 2025) | 2025 | 79 | #183 |
| GD Grenada | Grenada — Consolidated List of Electors December 2025 | 2025 | 59 | #165 |
| GB United Kingdom | Surnames of England and Wales (taliesin-arlein.net, Sept 2002 electoral register) | 2002 | 42 | #56,688 |
| GY Guyana | Guyana — Official List of Electors July 2025 | 2025 | 32 | #593 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 2
- Dictionary of American Family Names
- 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
- What does the name Neptune mean, and where does it come from?
- The eighth planet in our solar system, represented in astronomy and astrology by ♆. Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- In which country does Neptune have the most bearers?
- Neptune is most frequently recorded in the United States, where it is most often spelled neptune.
What do you want to know about Neptune?
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/neptuneThe 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, “Neptune”. Data snapshot 2026-10-10.