Is Kayin a boy or girl name?

Kayin is mostly a boy’s name. Of the 630 Americans recorded with the name since 1880, 13.0% were girls and 87.0% were boys.

Name Legacy

Kayin

Recorded 1977–2025 · United States

Kayin was most popular in 2005, when 39 American babies were given the name — ranking #6,335 that year. In 2025 it ranked #18,449, with 8 births. Across 1880–2025 the Social Security Administration has recorded 630 people named Kayin.

Kayin over time

Births per year. The dot marks Kayin’s peak in 2005. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Kayin a boy’s or a girl’s name?

Across the whole record Kayin is mostly a boy’s name — 13.0% of the 630 Americans given it were girls and 87.0% were boys. In births since 2016 it is 12% girls and 88% 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 Kayin

Explore further

See Kayin on the interactive charts

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