Slender or keeper of the keys
Kaylin is a modern American invention, likely created by combining the phonetic elements of Kay and the popular suffix -lin. It is often associated with the Irish name Caoilfhionn, meaning slender and fair, or as a variation of the English name Kay, meaning keeper of the keys.
About 126 girls were named Kaylin in 2025.
Olympic alpine ski racer
Television personality and model
US births per 5-year period, 1990–present (SSA data).
The same feel as Kaylin — far less common.
Hidden gems that stand out.
