Slender or keeper of the keys
Kailen is a modern phonetic variant likely derived from the Gaelic name Caelan, meaning slender, or the English name Kay, meaning keeper of the keys. It has gained usage as a contemporary unisex choice that blends traditional sounds with a unique spelling.
About 23 boys were named Kailen in 2025.
US births per 5-year period, 1990–present (SSA data).
Professional soccer goalkeeper for the Canadian national team
