Given name
Izaak
“full of laughter”
Izaak is a variant of Isaac. One Hebrew interpretation is “full of laughter.”
Meaning & origin
What it means
Izaak is a variant of Isaac. One Hebrew interpretation is “full of laughter.”
Explained through its name family
Where it comes from
Izaak is a variant of Isaac. An origin associated with Isaac is Hebrew.
Explained through its name family
How it developed
In Polish usage, Izaak developed from Ἰσαάκ.
The story
Published U.S. birth records include this spelling as early as 1972. This is the earliest published observation available here, rather than a date for the name’s origin. Izaak is a variant of Isaac. The history of Isaac gives this family its wider story. In biblical tradition, Isaac is the name of the son of Abraham.
Combines direct and name-family evidence
Izaak through the years
- Babies since 1880
- 2,889
- 2,889 boys · 0 girls
- Most popular year
- 2011
- 138 babies
- 2025
- 41
- #3,016 for boys
- 2021–25 vs 2016–20
- −9%
- Steady
Where it’s given
By the numbers
In 2025, this name appeared in 41 U.S. birth records for boys, ranking No. 3,016 among boys’ names. Average annual use for boys was 9.1% lower in 2021–2025 than in 2016–2020. Its largest published annual count for boys was 138 in 2011. In 2025, Florida had the largest reported state-level birth count for boys with this name (7). Published U.S. population figures for this spelling include 2,157 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Izaak’s family of names
In Polish usage, Izaak has a diminutive in ICEK. Izaak shares a linguistic root with Isaac. In English usage, Izaak has a conventional equivalent in the Polish form Izak.
Inner ring: spellings · middle: nicknames and forms · outer: across languages.
Around the world
Izaak has relatives in 4 languages.
4 related names in 4 languages. Point at a dot, or tab to the map and use the arrow keys.
Nicknames & forms 2
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 1
The same name written differently, including transliterations into other scripts.
Across languages 17
Equivalents and cognates in other languages, plus older forms it grew from.
See also 1
Names our sources mention alongside this one. They are related in story or meaning, not forms of this name.
People named Izaak
- Izaak WaltonEnglish author and biographer (1593-1683)
- Izaak KolthoffDutch-American analytical chemist and university teacher (1894–1993)
- Isaak van den BlockePolish artist (1575–1626)
- Izaak ReijndersDutch military officer (1879–1966)
- Izaak Huru DokoNational Hero of Indonesia1913–1985
- Isaac of Seleucia-CtesiphonPrimate of the Church of the East from 399 to 410
- Izaak TowbinPolish chess player1899–1941
- Izaak KramsztykRabbi and Political activist1814–1889
- Izaak van OostenFlemish painter (1613-1661)
Listed by how widely each person is written about, which says nothing about the name itself.
Similar names
If you love Izaak, these share its style, era, origin or sound, from outside its own family.
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Izayiah
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