Jaenisch
surname · Latin script
(measured from records)Officially recorded in 4 countries · latest register: Census Bureau, 2020
/ʒɐẽjʃt͡ʃ/(machine-generated) Portuguese · model-generated
Jaenisch is a surname written in the Latin script, with more bearers in Germany than in any other country.
- SGSingapore≈1 in 53Kfew records(inferred from the name graph)
- ARArgentina1 in 3M
- ATAustria≈1 in 5.9Kfew recordsas Janisch
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 Jaenisch itself, the figure is that spelling’s, and it is named. 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.
- Germany (inferred from the name graph)
- Record sources
- 195 (measured from records)
- ≈1 in 53K (inferred from the name graph)
≈1,600 named Janisch, est.
corpus datasets behind its best-documented spelling
strongest: highest-authority source
Singapore, est.
measured from records inferred from the name graph
Spellings & scripts
(measured from records)Locally spelled Janisch in US United States, DE Germany, AT Austria and 4 more.
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)Jaenisch 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 | ||||
|---|---|---|---|---|---|---|
| DE Germany | — | ≈1,600 est. | ≈1 in 51K | listed | Janisch | 95 |
| AT Austria | #631 | ≈1,500 est. | ≈1 in 5.9K | — | Janisch | 68 |
| US United States | — | 1,233as Janisch | 1 in 270K | 1.2K | Janisch | 195 |
| ZA South Africa | — | ≈210 est. | ≈1 in 305K | — | Janisch | 13 |
| BR Brazil | — | 165as Janisch | 1 in 1.3M | 165 | Janisch | 34 |
| SG Singapore | — | ≈110 est. | ≈1 in 53K | — | Jaenisch | 1 |
| CZ Czechia | — | 72as Janisch | 1 in 149K | 72 | — | — |
| AR Argentina | — | 15 | 1 in 3M | 15 | Janisch | 16 |
| AG Antigua & Barbuda | #851 | ≈5 est. | ≈1 in 19K | — | Janisch | 1 |
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; the dfa-band-6 register; IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname); RENAPER — Apellidos (person counts, national); MVČR — living population register 2017. 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)- Hans Jaenischb. 1907DEGerman painter (1907-1989)
- Rudolf Jaenischb. 1942DEGerman geneticist
- Thomas Jaenischb. 2000researcher
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)9 registers and reference works attest this spelling, across 4 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — Surname Frequency 2020 | 2020 | 155 | #118,445 |
| US United States | Census Bureau — Surname Frequency 2010 | 2010 | 143 | #120,901 |
| US United States | Census Bureau — Surname Frequency 2000 | 2000 | 139 | #116,123 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 77 | #76,923 |
| AR Argentina | RENAPER — Apellidos (person counts, national) | — | 15 | — |
| DE Germany | Deutscher Familiennamenatlas Band 6 | — | — | — |
| US United States | wru Name Dictionary — US surnames, Census 2010 subset (Khanna et al.) | — | — | — |
Reference works 2
- 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 Jaenisch?
- In Portuguese /ʒɐẽjʃt͡ʃ/. Transcriptions are machine-generated except where a dictionary is named.
- In which country does Jaenisch have the most bearers?
- Mondonomo estimates about 1.6 thousand people named Janisch in Germany, more than in any other country we hold.
- How common is the name Jaenisch?
- In Argentina, the national register counted 15 people named Jaenisch, about 1 in 3.0 million residents.
- How common is Jaenisch compared with other names?
- In Austria, Jaenisch is the 631st most common surname of 127,275 surnames recorded there.
What do you want to know about Jaenisch?
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/jaenischThe 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, “Jaenisch” — the 631st most common surname in Austria. Data snapshot 2026-10-13.