Izaak
Izaak was the 3016th most popular name for boys in 2025, given to 41 babies. Its best year was 2011, when it ranked 1255th with 138 babies. Over the last ten years it has moved down 1,294 places. More babies were named Izaak in the 2000s than in any other decade.
Meaning (as Isaac) 'he laughs / will laugh' · Hebrew
- Rank in 2025
- #3,016 boys, down 864 places since 2020
- Babies in 2025
- 41boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 2011138 babies
- Total since 1880
- 2,889babies recorded
What does the name Izaak mean?
Izaak is a spelling of Isaac, pronounced the same way, so it shares Isaac's meaning and origin.
Isaac is the Hebrew Yitzhak, 'he laughs' or 'he will laugh'. In Genesis he is the son of Abraham and Sarah, and his name recalls Sarah's laughter at being promised a son in old age. In Genesis 21:6 Sarah says that God has brought her laughter. Medieval Christian and Jewish communities both used the name; DMNES finds it in England from 1222.
יִצְחָק (Biblical Hebrew, “Yitzhak, '(he) will laugh'”)
How sure is this? Well established.
See also: Hebrew names, names that mean joy.
Sources for this meaning
- Dictionary of Medieval Names from European Sources (ed. S. L. Uckelman), Edition 2023 no. 1, s.v. 'Isaac'
- Hebrew Bible, Genesis 21.6, JPS Tanakh: Gender-Sensitive Edition, with translator's note (via Sefaria)
- US Social Security Administration, national baby-name data 1880-2025 (names.zip, yob*.txt), team3 computation
- Wikidata item Q5920537
- Wiktionary, entry 'Isaac'
Izaak popularity since 1880
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #3,016 | 41 |
| 2020 | #2,152 | 65 |
| 2010 | #1,432 | 116 |
| 2000 | #1,508 | 80 |
| 1990 | #4,515 | 12 |
| 1980 | #3,162 | 14 |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Izaak, counting every spelling?
Izaak is a spelling of Isaac, a name family that ranked #44 for boys in 2025 once every spelling is counted together, compared with #3,016 for Izaak on its own. Together these spellings went to 6,461 boys in 2025.
| Spelling | Babies 2025 | Official rank | Babies 2021–2025 |
|---|---|---|---|
| Isaac | 5,953 | #47 | 32,842 |
| Issac | 258 | #915 | 1,677 |
| Isaak | 48 | #2,693 | 293 |
| Izaak | 41 | #3,016 | 269 |
| Izaac | 44 | #2,856 | 256 |
| Izak | 23 | #4,449 | 144 |
| Isac | 22 | #4,600 | 130 |
| Isak | 38 | #3,154 | 130 |
| Isacc | 10 | #7,880 | 83 |
| Izac | 7 | #10,089 | 54 |
| Izack | 7 | #10,090 | 29 |
Spellings count together when they sound the same in American English and are used for the same sex; nicknames and forms that sound different (such as Theo and Theodore) are kept apart. How we group spellings.
How many kids will share the name Izaak?
41 of the 3,606,400 babies born in the US in 2025 were named Izaak (0.01 per 1,000 births). For a boy named Izaak born in 2025, the chance that another child with the same name is in a class of 20 children the same age is under 1 in 50. If every grade liked the name as much as the 2025 babies do, only about one elementary school in 204 (of 430 pupils) would have a child named Izaak.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Izaak?
About 2,800 people born in the US named Izaak are alive today, with a median age of 18; half are between 12 and 25. That makes Izaak mostly worn by children and young adults.
Babies given the name each year (SSA) times the share of that birth year still alive (SSA life tables). Counts people born in the US only. Method.
Izaak by state
How common Izaak was among boys born in each state in 2021–2025. In 45 states fewer than five boys a year got the name, too few for SSA to publish, so those states show as zero.
Names with a similar history
These names rose and fell in step with Izaak: their share of US boys followed the most similar curve since 1880. If you like Izaak, they share its era and feel.
Questions about the name Izaak
What does Izaak mean?
Izaak is a spelling of Isaac, which means “'he laughs / will laugh'” (Hebrew origin). Certainty: well established.
How popular is the name Izaak?
Izaak was the 3016th most popular name for boys in 2025, given to 41 babies. Its best year was 2011, when it ranked 1255th with 138 babies. Over the last ten years it has moved down 1,294 places. More babies were named Izaak in the 2000s than in any other decade.
Is Izaak a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Izaak in the US.
Where is Izaak most popular?
In 2021–2025, Izaak was most common in Connecticut (0.07 per 1,000 boys), followed by Arizona and Florida.