Little dark one or dark-haired
Kieryn is a modern phonetic spelling of the Irish name Kieran, which is derived from the Gaelic name Ciarán. The name is built from the element 'ciar', meaning black or dark, combined with a diminutive suffix. It traditionally referred to someone with dark hair or a dark complexion.
Fewer than 5 boys were named Kieryn in 2025.
US births per 5-year period, 1990–present (SSA data).
