Cayley

Meaning & origin

Cayley entered U.S. naming records in 1984, a late 20th-century arrival that fits within the broader trend of -ley and -lee endings. Its peak year was 1998, when it reached its highest rank. Since then, its usage has been falling, as noted in its trajectory. With a rank of 11,932 in 2025 and a 1-in-229,610 frequency, Cayley remains an uncommon choice. The name has no strong regional concentration, appearing across the country without dominating in any particular state. Its phonetic similarity to established names like Kayley and variations such as Caylee or Cayleigh keeps it recognizable while still standing apart. Cayley can be seen as a modern respelling of an Irish surname, linked to the Gaelic personal name Caollaidhe. This derivation places it in the company of other Irish-surnames-turned-first-names, a pattern that has proven enduring in American naming culture.

Cayley is most often considered a modern spelling variant of Kayley, which itself derives from the Irish surname O'Caollaidhe. The original Gaelic name Caollaidhe may have meant 'slender' or 'fair', but the connection is debated. As a given name, Cayley gained popularity in the late 20th century, especially in the United States and other English-speaking countries, where it follows the fashionable -ley suffix pattern.