Little dark one or black-haired
Kierin is a modern variant of the Irish name Kieran, which is derived from the Gaelic word 'ciar' meaning dark or black. It traditionally refers to someone with dark hair or a dark complexion. While historically masculine, this spelling is occasionally used for all genders in the United States.
Fewer than 5 boys were named Kierin in 2025.
US births per 5-year period, 1990–present (SSA data).
Lead singer of the group Deee-Lite, known as Lady Miss Kier
