Isak
Isak was the 3154th most popular name for boys in 2025, given to 38 babies. Its best year was 2004, when it ranked 2084th with 57 babies. Over the last ten years it has moved up 163 places. More babies were named Isak in the 2000s than in any other decade.
Meaning (as Isaac) 'he laughs / will laugh' · Hebrew
- Rank in 2025
- #3,154 boys, up 1,041 places since 2020
- Babies in 2025
- 38boys
- Girls and boys
- Almost always a boy’s name2021–2025
- Peak year
- 200457 babies
- Total since 1880
- 1,107babies recorded
What does the name Isak mean?
Isak 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'
Isak popularity since 1880
| Year | Rank (boys) | Babies (boys) |
|---|---|---|
| 2025 | #3,154 | 38 |
| 2020 | #4,195 | 24 |
| 2010 | #2,445 | 51 |
| 2000 | #3,023 | 29 |
| 1990 | #6,714 | 7 |
| 1980 | #6,649 | 5 |
| 1970 | — | — |
| 1960 | — | — |
| 1950 | — | — |
| 1940 | — | — |
| 1930 | — | — |
| 1920 | — | — |
| 1910 | — | — |
| 1900 | — | — |
| 1890 | — | — |
| 1880 | — | — |
How popular is Isak, counting every spelling?
Isak is a spelling of Isaac, a name family that ranked #44 for boys in 2025 once every spelling is counted together, compared with #3,154 for Isak 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 Isak?
38 of the 3,606,400 babies born in the US in 2025 were named Isak (0.01 per 1,000 births). For a boy named Isak 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 221 (of 430 pupils) would have a child named Isak.
Shares of all registered births (NCHS); classes assumed to be children born the same year. How we estimate this.
How old are people named Isak?
About 1,100 people born in the US named Isak are alive today, with a median age of 19; half are between 11 and 24. That makes Isak 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.
Isak by state
How common Isak was among boys born in each state in 2021–2025. In 49 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 Isak: their share of US boys followed the most similar curve since 1880. If you like Isak, they share its era and feel.
Questions about the name Isak
What does Isak mean?
Isak is a spelling of Isaac, which means “'he laughs / will laugh'” (Hebrew origin). Certainty: well established.
How popular is the name Isak?
Isak was the 3154th most popular name for boys in 2025, given to 38 babies. Its best year was 2004, when it ranked 2084th with 57 babies. Over the last ten years it has moved up 163 places. More babies were named Isak in the 2000s than in any other decade.
Is Isak a boy or girl name?
In 2021–2025, almost always a boy’s name given the name Isak in the US.
Where is Isak most popular?
In 2021–2025, Isak was most common in Texas (0.01 per 1,000 boys), followed by California and California.