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The first name Iain

A boy’s name from Scottish Gaelic.

2 syllables Male

Meaning and origin

Scottish Gaelic origin

From Scottish Gaelic. Cognate of John; see there for more.

From Wiktionary (CC BY-SA 4.0).

Popularity

Babies registered in England and Wales, 1996–2025

Iain last appeared in the official list in 2021, given to 4 boys. It peaked in 1996, with 76 births (#319).

04080 1996200020052010201520202025
517
babies named Iain, 1996–2025
#3,990
rank in 2021
1996
peak year

Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Iain with other names.

Popularity in the United States

Babies named Iain at birth, 1880–2025

In 2025, 11 boys born in the United States were named Iain, the 7,357th most popular boys’ name that year. It was used most in 2003, when 126 were.

0100200 188018851890189519001905191019151920192519301935194019451950195519601965197019751980198519901995200020052010201520202025
2,911
babies named Iain since 1880
#7,357
rank in 2025
2003
peak year

US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.

Nicknames and spellings

Other spellings and forms

Famous people named Iain

19 on Wikidata, most written-about first

  • Iain Armitage
    American actor, born 2008
  • Iain Duncan Smith
    British politician, born 1954
  • Iain Macleod
    British politician, cabinet minister and contract bridge player (1913-1970)
  • Iain Percy
    British sailor, born 1976
  • Iain Pears
    British writer and art historian, born 1955
  • Iain Hume
    Canadian soccer player, born 1983
  • Iain Softley
    British film director, born 1956
  • Iain Canning
    British film producer, born 1979
  • Iain Brambell
    Canadian rower, born 1973
  • Iain Dowie
    English football manager (born 1965)
  • Iain Ramsay
    Australian association football player, born 1988
  • Iain Stewart
    British politician (born 1972)

More Scottish Gaelic boys’ names

Questions

What does the name Iain mean?
From Scottish Gaelic. Cognate of John; see there for more.
What is the origin of the name Iain?
From Scottish Gaelic. Cognate of John; see there for more.
How popular is the name Iain?
In 2021, 4 boys born in England and Wales were named Iain, ranking 3,990th. Its peak was 1996, with 76 births.
Is Iain a boy's or a girl's name?
Mostly a boy's name: 100% of the 2,911 US babies named Iain since 1880 were boys.
When was Iain most popular?
2003 in the United States, when 126 babies were named Iain, its highest rank at 1,181st.
What are other spellings of Iain?
Ian.