Hartt
surname · Latin script
Recorded for both men and women· direction only, no split published
/ˈhɑɹt/(machine-generated) pronunciation, model-generated
Hartt is a surname written in the Latin script, with more bearers in the United States than in any other country. In Isle of Man it is the 56th most common surname. Recorded meaning: Main GB Location (1881): Norfolk. see Hart .
- USUnited States1 in 286K(measured from records)
- IMIsle of Man≈1 in 5.1K
- CACanada≈1 in 119K
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.
- United States (measured from records)
- Sources
- 241 (measured from records)
- ≈1 in 5.1K (inferred from the name graph)
1,164 people, 2010
Highest-authority source
Isle of Man, est.
measured from records inferred from the name graph
Meaning & origin(measured from records)
Main GB Location (1881): Norfolk. see Hart .
Sources 2
- Dictionary of American Family Names
- The Oxford Dictionary of Family Names in Britain and Ireland
Attested in 1 language in the etymology graph.
Where in the world(measured from records)
Hartt 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 | ||||
|---|---|---|---|---|---|---|
| US United States | — | 1,164 | 1 in 286K | 1.2K | Hartt | 241 |
| EG Egypt | — | ≈320 est. | ≈1 in 322K | — | Hartt | 2 |
| CA Canada | — | ≈320 est. | ≈1 in 119K | 1 | Hartt | 74 |
| GB United Kingdom | — | ≈270 est. | ≈1 in 248K | — | Hartt | 72 |
| BR Brazil | — | 209 | 1 in 1M | 209 | Hartt | 33 |
| IM Isle of Man | #56 | ≈18 est. | ≈1 in 5.1K | — | Hartt | 1 |
| IE Ireland | — | ≈17 est. | ≈1 in 300K | — | Hartt | 4 |
1,164 people counted by Census Bureau — Surname Frequency 2010, 2010. 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; Alberta Open Government — Frequency and Ranking of Baby Names by Year and Gender; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname). 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)
Hartt is also recorded in one other lexicon, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In enm, alternative form of hert
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
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)
- Charles Frederick Harttb. 1840CACanadian-American geologist, paleontologist and naturalist
- Thomas Aaron Harttb. 1858CACanadian politician (1858–1930)
- James Irwin Harttb. 1867CACanadian politician
- Cecil Harttb. 1894AUAustralian artist
- Maurice Harttb. 1895CACanadian politician (1895-1950)
- Constance Endicott Harttb. 1900USU.S. botanist (1900-1984)
- Frederick Harttb. 1914USItalian Renaissance scholar, author and professor of art history (1914–1991)
- Stanley Harttb. 1937CACanadian lawyer, academic, businessman and civil servant (1937–2018)
- Reg Harttb. 1946CACanadian film archivist
- David Harttb. 1967CAvisual artist (born 1967)
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 13 sources across 4 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 1.2K | #22,183 |
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 1.1K | #23,682 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 1K | #23,454 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 209 | #35,493 |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 5
- Dictionary of American Family Names
- 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)
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 Hartt mean, and where does it come from?
- Main GB Location (1881): Norfolk. see Hart . Recorded by Dictionary of American Family Names and The Oxford Dictionary of Family Names in Britain and Ireland.
- How do you pronounce Hartt?
- A machine transcription gives /ˈhɑɹt/ (IPA) for English.
- In which country does Hartt have the most bearers?
- In the United States, the national register counted about 1.2 thousand people named Hartt, more than in any other country we hold, where it is most often spelled hartt.
- How common is the name Hartt?
- In the United States, the national register counted 1,164 people named Hartt in 2010, about 1 in 286 thousand residents.
- How common is Hartt compared with other names?
- In Isle of Man, Hartt is the 56th most common surname of 521 surnames recorded there.
What do you want to know about Hartt?
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/harttThe 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, “Hartt” — the 56th most common surname in Isle of Man. Data snapshot 2026-10-10.