Is Cassian a boy or girl name?

Cassian is a boy’s name. Of the 2,907 Americans recorded with the name since 1880, 0.5% were girls and 99.5% were boys.

Cassian

Recorded 1997–2025 · United States

Cassian was most popular in 2025, when 633 American babies were given the name — ranking #968 that year. In 2025 it ranked #968, with 633 births. Across 1880–2025 the Social Security Administration has recorded 2,907 people named Cassian.

Cassian over time

Births per year. The dot marks Cassian’s peak in 2025. Gaps are years the SSA suppressed, which it does for any name given to fewer than five babies.

Is Cassian a boy’s or a girl’s name?

Across the whole record Cassian is a boy’s name — 0.5% of the 2,907 Americans given it were girls and 99.5% were boys. In births since 2016 it is 1% girls and 99% 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 Cassian

Where Cassian is most concentrated

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

Explore further

See Cassian on the interactive charts

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