NameCensus.

UK boy's name

Iain

A masculine Scottish form of the name John, meaning "God is gracious".

For 2026, the newest official UK baby-name figures on this page are from 2021. That release is the current official benchmark rather than a forecast.

Iain is a boy's name in the UK records. People looking for Iain popularity in 2026 should use the latest official release, which is 2021 in this profile. In that release it ranked #3990, with 4 babies registered with the name. Its strongest year in the published records was 1996, with 76 births.

This profile covers 517 England and Wales registrations across 25 recorded years from 1996 to 2021. The figures come from ONS England and Wales, NRS Scotland and NISRA Northern Ireland, 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 5% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 7,505 living people in the UK are called Iain. 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 2022 or 2026.

Key insights

  • Iain ranked #3990 for boys in England and Wales in 2021, with 4 registrations.
  • The name peaked in 1996, when 76 boys were registered as Iain.
  • Iain ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #315 in 2007.
  • About 7,505 living people in the UK are estimated to have Iain as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#3990

2021

Births in 2021

4

Latest year

Peak year

1996

76 births

Estimated living

7,505

2026

Meaning

What does Iain mean?

Iain is a Scottish Gaelic masculine given name derived from the Hebrew name John, which means "Yahweh is gracious." The name originated in the Scottish Highlands and Islands in the medieval period, stemming from the Gaelic form of John, Iain.

The earliest recorded use of the name Iain dates back to the 13th century, with references found in various Scottish historical records and documents. One notable mention is in the Annals of Ulster, an ancient chronicle of medieval Irish history, which records the death of "Iain mac Dhuibhne" in the year 1279.

In the 14th century, the name gained prominence with the birth of Iain Muideartach, who became the Lord of the Isles and Chief of Clan Donald. This influential Scottish clan chief played a significant role in the political and military affairs of Scotland during the late medieval period.

Throughout history, several notable figures have borne the name Iain. One of the most prominent was Iain Lom (1624-1709), a Scottish poet and warrior who composed works praising the Jacobite cause and the Clan Donald. His poems are considered important works of Scottish Gaelic literature.

Another notable Iain was Iain Breac MacLeod (1572-1647), a Scottish chief of Clan MacLeod who was instrumental in the pacification of the Scottish Isles during the reign of King James VI of Scotland and I of England.

In the 18th century, Iain Dall Mackintosh (1710-1804), a Scottish Gaelic poet and soldier, gained recognition for his works celebrating Highland culture and the Jacobite risings.

Iain Lom McDhomhnuill (1787-1848), a Scottish Gaelic poet and schoolmaster, was highly regarded for his powerful and emotive poetry, which often reflected on the political and social changes of his time.

More recently, Iain Banks (1954-2013) was a renowned Scottish author known for his literary works, including "The Wasp Factory" and "The Crow Road," as well as his science fiction novels written under the name Iain M. Banks.

These are just a few examples of notable figures throughout history who have carried the name Iain, a name deeply rooted in Scottish Gaelic culture and tradition.

Sourced from namecensus.com.

Popularity

Iain over time

The chart below shows babies named Iain registered in England and Wales in the years where the name appears in the published records, from 1996 to 2021. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Iain, the clearest high point is 1996. The latest England and Wales figure is 4 births in 2021, compared with 76 at the peak.

Babies born per year

Iain
019385776199620082021

Decades

Iain by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Iain 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 #3990 4 1
2010s #3399 54 10
2000s #1261 211 10
1990s #380 248 4

Geography

Where Iain is most common

The bars show the latest published local birth counts for Iain. They are useful for spotting where the name is showing up in real numbers, while the rank beside each bar shows how strongly it performs inside that region.

Iain ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #315 in 2007.

Northern Ireland
4
Scotland
3

Across the UK

Iain in Scotland and Northern Ireland

Scotland (NRS)

#727 in 2024

51 years of NRS records, 7,191 total registered

Northern Ireland (NISRA)

#315 in 2007

5 years of NISRA records, 18 total registered

Notable bearers

Famous people named Iain

  • Iain Wilson

    association football player

    Scottish association football player

    1998-

  • Iain Thornley

    rugby union player; rugby league player

    English rugby league and rugby union footballer

    1991-

  • Iain Weaver

    boxer

    English boxer

    1990-

  • Iain Stirling

    comedian; television presenter; stand-up comedian

    British comedian

    1988-

  • Iain Williamson

    association football player

    Scottish footballer (born 1988)

    1988-

  • Iain Vigurs

    association football player

    Scottish footballer

    1988-

  • Iain Wardlaw

    cricketer

    English county cricketer (born 1985)

    1985-

  • Iain Turner

    association football player

    British footballer (born 1984)

    1984-

Related

Names similar to Iain

FAQ

Iain: questions and answers

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

In 2021, Iain was ranked #3990 for boys in England and Wales, with 4 births registered.

When was Iain most popular?

The peak year on record was 1996, with 76 babies registered as Iain in England and Wales.

What is the meaning and origin of Iain?

A masculine Scottish form of the name John, meaning "God is gracious".

How many people are called Iain in the UK?

A total of 517 babies have been registered as Iain across the 25 years of ONS England & Wales records shown here, plus 7,191 more in Scotland and 18 in Northern Ireland.

Where is Iain most common?

In the latest published local rankings, Iain ranks best in Northern Ireland, where it placed #315 in 2007. The regional bars on this page use birth counts, so they also reflect the size of each region.

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.