NameCensus.

UK boy's name

Isaia

Hebrew name meaning "Salvation of the Lord" or "Yahweh is salvation".

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.

Isaia is a boy's name in the UK records. People looking for Isaia popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #1517, with 17 babies registered with the name. Its strongest year in the published records was 2024, with 17 births.

This profile covers 87 England and Wales registrations across 11 recorded years from 2013 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.

Isaia is at its recorded peak in the England and Wales series.

We estimate that about 87 living people in the UK are called Isaia. 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

  • Isaia ranked #1517 for boys in England and Wales in 2024, with 17 registrations.
  • The name peaked in 2024, when 17 boys were registered as Isaia.
  • About 87 living people in the UK are estimated to have Isaia as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#1517

2024

Births in 2024

17

Latest year

Peak year

2024

17 births

Estimated living

87

2026

Meaning

What does Isaia mean?

The name Isaia has its origins in the Hebrew language, derived from the biblical name Isaiah. The name Isaiah is derived from the Hebrew words "Yesha'yahu" or "Yeshayah," which translate to "Salvation of Yahweh" or "Yahweh is salvation." This name was borne by the Old Testament prophet Isaiah, whose book in the Bible contains prophecies about the coming of the Messiah.

Isaia is the Italian and Romanian form of the name Isaiah, and it has been used in these cultures for centuries. The earliest recorded use of the name Isaia can be traced back to the 13th century in Italy, where it was given to children as a nod to the biblical prophet.

One of the most famous historical figures named Isaia was Isaia da Pisa, an Italian mathematician and astronomer who lived in the 14th century. He is known for his contributions to the development of algebraic notation and for his work on the theory of proportions.

Another notable bearer of the name was Isaia Bicci, an Italian painter from the 15th century who was active in Florence and Siena. His works include frescoes and altarpieces, some of which can still be seen in churches and museums in Italy today.

In the 16th century, Isaia Porzio was an Italian philosopher and physician who wrote extensively on the philosophy of nature and the human soul. He was associated with the Aristotelian school of thought and was highly regarded in his time.

Moving into the 17th century, Isaia Mutio was an Italian Jesuit priest and missionary who spent many years working in the Far East, particularly in Japan and China. He is known for his contributions to the understanding of East Asian cultures and languages.

Lastly, in the 19th century, Isaia Gabai was an Italian Jewish scholar and rabbi who made significant contributions to the study of the Talmud and Jewish law. He served as the chief rabbi of Livorno, Italy, and was highly respected within the Italian Jewish community.

Sourced from namecensus.com.

Popularity

Isaia over time

The chart below shows babies named Isaia registered in England and Wales in the years where the name appears in the published records, from 2013 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 Isaia, the clearest high point is 2024. The latest England and Wales figure is 17 births in 2024, compared with 17 at the peak.

Babies born per year

Isaia
0491317201320182024

Decades

Isaia by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Isaia 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 #2106 55 5
2010s #3415 32 6

Related

Names similar to Isaia

FAQ

Isaia: questions and answers

How popular is the name Isaia in the UK right now?

In 2024, Isaia was ranked #1517 for boys in England and Wales, with 17 births registered.

When was Isaia most popular?

The peak year on record was 2024, with 17 babies registered as Isaia in England and Wales.

What is the meaning and origin of Isaia?

Hebrew name meaning "Salvation of the Lord" or "Yahweh is salvation".

How many people are called Isaia in the UK?

A total of 87 babies have been registered as Isaia across the 11 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.