Is Iain a boy or girl name?

Iain is a boy’s name. Of the 2,911 Americans recorded with the name since 1880, 0.0% were girls and 100.0% were boys.

Iain

Recorded 1953–2025 · United States

Iain was most popular in 2003, when 126 American babies were given the name — ranking #2,697 that year. In 2025 it ranked #15,103, with 11 births. Across 1880–2025 the Social Security Administration has recorded 2,911 people named Iain.

Iain over time

Births per year. The dot marks Iain’s peak in 2003. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Iain a boy’s or a girl’s name?

Across the whole record Iain is a boy’s name — 0.0% of the 2,911 Americans given it were girls and 100.0% were boys. In births since 2016 it is 0% girls and 100% boys.

Counted from every US birth the Social Security Administration recorded under this name, so it reflects use rather than opinion. A name given to fewer than five babies of one sex in a year is withheld at source and is not counted.

Names that peaked alongside Iain

Where Iain is most concentrated

How much more common the name is in each state than across the country as a whole.

Explore further

See Iain on the interactive charts

Source: U.S.A. Social Security Administration. Years 1880–2025. namelegacy.org