Curly-haired
A modern spelling variation of the Irish surname Cassidy. It is derived from the Gaelic 'Caiside', which originally served as a nickname for someone with curly hair. While the surname has a long history in Ireland, this specific spelling is a contemporary American adaptation.
Fewer than 5 girls were named Cassadi in 2025.
US births per 5-year period, 1990–present (SSA data).
