UK boy's name
Isac
A masculine given name derived from the Hebrew name Yitzchak meaning "he will laugh".
For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.
Isac is a boy's name in the UK records. People looking for Isac popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #2263, with 10 babies registered with the name. Its strongest year in the published records was 2011, with 13 births.
This profile covers 131 England and Wales registrations across 19 recorded years from 2004 to 2024. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.
The latest count is about 77% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 130 living people in the UK are called Isac. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2025 or 2026.
Key insights
- • Isac ranked #2263 for boys in England and Wales in 2024, with 10 registrations.
- • The name peaked in 2011, when 13 boys were registered as Isac.
- • About 130 living people in the UK are estimated to have Isac as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#2263
2024
Births in 2024
10
Latest year
Peak year
2011
13 births
Estimated living
130
2026
Meaning
What does Isac mean?
The name Isac is derived from the Hebrew name Yitzchak, meaning "he laughs" or "he will laugh." This name has its origins in the biblical story of Abraham and Sarah, who were promised a son in their old age and named him Isaac, which is the English translation of the Hebrew name Yitzchak.
The name Isac is a variant spelling of the more common English form, Isaac. This variant is particularly prevalent in Scandinavian countries such as Sweden, Denmark, and Norway, where it has been in use for centuries.
One of the earliest recorded instances of the name Isac can be found in the Bible's Book of Genesis, where Isaac is the son of Abraham and Sarah, and the father of Jacob and Esau. This biblical figure is revered in the Abrahamic religions of Judaism, Christianity, and Islam.
Throughout history, there have been several notable individuals bearing the name Isac. One of the earliest was Isac Comnenus, a Byzantine prince and military commander who lived in the 11th century. Another was Isac Angelus, a Byzantine emperor who reigned from 1185 to 1195.
In the field of science, Isac Newton (1642-1727) was a renowned English mathematician, physicist, astronomer, and natural philosopher, who is widely regarded as one of the most influential scientists of all time. His contributions include the laws of motion, the universal law of gravitation, and the development of calculus.
In the realm of literature, Isac Bashevis Singer (1902-1991) was a Polish-American writer and Nobel Laureate, known for his short stories and novels depicting the life and struggles of Jewish communities in Poland.
Another notable figure was Isac Merritt Singer (1811-1875), an American inventor and entrepreneur who founded the Singer Sewing Machine Company and revolutionized the sewing machine industry.
These are just a few examples of individuals throughout history who have borne the name Isac, a name with deep roots in the Hebrew language and biblical tradition, and a variant spelling that has gained popularity in various regions around the world.
Sourced from namecensus.com.
Popularity
Isac over time
The chart below shows babies named Isac registered in England and Wales in the years where the name appears in the published records, from 2004 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Isac, the clearest high point is 2011. The latest England and Wales figure is 10 births in 2024, compared with 13 at the peak.
Babies born per year
Decades
Isac by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Isac was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.
| Decade | Average rank | Total births | Years covered |
|---|---|---|---|
| 2020s | #2471 | 34 | 4 |
| 2010s | #2984 | 69 | 10 |
| 2000s | #2946 | 28 | 5 |
Related
Names similar to Isac
- Isaac 49,129
- Ibrahim 14,115
- Ismail 4,679
- Isaiah 4,629
- Idris 3,810
- Ivan 3,146
- Isa 2,943
- Ian 2,805
- Ilyas 2,552
- Ieuan 2,515
- Ibraheem 2,384
- Ioan 2,295
FAQ
Isac: questions and answers
How popular is the name Isac in the UK right now?
In 2024, Isac was ranked #2263 for boys in England and Wales, with 10 births registered.
When was Isac most popular?
The peak year on record was 2011, with 13 babies registered as Isac in England and Wales.
What is the meaning and origin of Isac?
A masculine given name derived from the Hebrew name Yitzchak meaning "he will laugh".
How many people are called Isac in the UK?
A total of 131 babies have been registered as Isac across the 19 years of ONS England & Wales records shown here.
Which records is this page based on?
The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.