Cassidey

Irish

"curly-headed"

Cassidey Origin and Meaning

The name Cassidey is a boy's name.

Cassidey as a masculine name is an unusual gender assignment for what is typically considered a feminine name in modern usage. Derived from the Irish surname Ó Caiside, meaning 'descendant of Caiside,' it ultimately comes from 'caiside,' referring to 'curly-haired.' The spelling with '-ey' ending is a contemporary variation of Cassidy. While Cassidy has historical use as a boy's name from its surname origins, the Cassidey spelling is rare for males. This variant emerged in the late 20th century amid the trend of Irish surnames becoming first names. For boys, it carries connotations of Irish heritage while offering a unique option that balances traditional roots with a modern sound.