Izaak
given name · Latin script
Meaning: Isaac (son of Abraham and Sarah)
Recorded as a male name· opposite-gender records fall within measured source noise
/ɪzəæk/(machine-generated) pronunciation, model-generated
Izaak is a given name written in the Latin script, with more bearers in the United States than in any other country.
- USUnited States1 in 154K(measured from records)
- NLNetherlands1 in 8.9K
- AUAustralia≈1 in 118K
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
- 153 (measured from records)
- 1 in 8.9K (inferred from the name graph)
2,157 people, 2020
Highest-authority source
Netherlands
measured from records inferred from the name graph
Meaning & origin(measured from records)
Isaac (son of Abraham and Sarah)
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 19 languages in the etymology graph.
Where in the world(measured from records)
Izaak 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 | 2,157 | 1 in 154K | 2.1K | Izaak | 153 |
| NL Netherlands | 1,933 | 1 in 8.9K | 1.9K | Izaak | 40 |
| ZA South Africa | ≈270 est. | ≈1 in 213K | — | Izaak | 8 |
| AU Australia | ≈220 est. | ≈1 in 118K | 4 | Izaak | 76 |
| BR Brazil | 185 | 1 in 1.1M | 185 | Izaak | 27 |
| NZ New Zealand | ≈26 est. | ≈1 in 190K | — | Izaak | 24 |
2,157 people counted by Census Bureau — First Name Frequency 2020 by sex, 2020. 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 — First Name Frequency 2020 by sex; Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018); Australian national given names (aggregated state BDM); IBGE — names by decade (Kaggle mirror). 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)
- Izaak van den Blockeb. 1575PLPolish artist (1575–1626)
- Isaak Waltonb. 1593GBnot in their usual nameEnglish author and biographer (1593-1683)
- Isaak van Oostenb. 1613BEnot in their usual nameFlemish painter (1613-1661)
- Yaakov Yitzchak of Lublinb. 1745PLnot in their usual namePolish rabbi
- Izaak Kramsztykb. 1814PLRabbi and Political activist
- Izaak Reijndersb. 1879NLDutch military officer (1879–1966)
- Izaak Holcbergb. 1885LTRussian politician (1885-1981)
- Izaak Kolthoffb. 1894NLDutch-American analytical chemist and university teacher (1894–1993)
- Izaak Towbinb. 1899PLPolish chess player
- Phife Dawgb. 1970USnot in their usual nameAmerican rapper (1970–2016)
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)
A formal English salutation is built on the surname, so it needs a full name — on its own, a first name only supports the informal form.
Evidence(measured from records)
Attested in 45 sources across 22 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 2.1K | #7,150 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018) | — | 1.8K | #720 |
| BR Brazil | IBGE — names by decade (Kaggle mirror) | 2022 | 185 | — |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 184 | #26,884 |
| BR Brazil | Brasil.IO genero-nomes (IBGE Censo 2010 mirror, CC-BY-SA) | — | 97 | #19,015 |
| BR Brazil | IBGE — Nomes (census name API) | — | 51 | #47,828 |
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | 2020 | 48 | — |
| US United States | SSA — National Baby Names (1880–present) | 2025 | 41 | — |
| US United States | Census Bureau — First Name Frequency 2020 by sex | 2020 | 8 | #7,150 |
| NL Netherlands | Meertens NVB — Nederlandse Voornamenbank (all-time BRP bearer counts, 2018) | — | 5 | #34,383 |
| AU Australia | Australian national given names (aggregated state BDM) | 2011 | 4 | — |
| AU Australia | AU state BDM — consolidated top baby names (NSW + SA + QLD) | 2016 | 1 | #787 |
Reference works 5
- Dictionary of American Family Names
- Nederlandse FamilienamenBank (Dutch surname bank; ex-Meertens Instituut, now CBG)2007
- Wikipedia given-name tokens
- Wikidata name items (native-script + romanized given/family names)
- Rymut, Słownik nazwisk współcześnie w Polsce używanych (10 vols, IJP PAN, Kraków 1992–1994) — every Polish surname in the PESEL register at the end of 1990, with bearer counts nationally and per voivodeship1990
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 Izaak mean, and where does it come from?
- Isaac (son of Abraham and Sarah) Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- How do you pronounce Izaak?
- A machine transcription gives /ɪzəæk/ (IPA) for English.
- Is Izaak a male or female name?
- Izaak is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- What are other forms of the name Izaak?
- In the etymology graph, Isaac, Issac and Ike are forms of the same name in other languages.
- In which country does Izaak have the most bearers?
- In the United States, the national register counted about 2.2 thousand people named Izaak, more than in any other country we hold, where it is most often spelled izaak.
- Where is Izaak most common?
- Measured as a share of residents rather than as a count, Izaak is densest in the Netherlands — about 1 in 8.9 thousand people — even though United States holds more of our records for it.
- How common is the name Izaak?
- In the United States, the national register counted 2,157 people named Izaak in 2020, about 1 in 154 thousand residents.
What do you want to know about Izaak?
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/izaakThe 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, “Izaak”. Data snapshot 2026-10-10.