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Cailen
UnisexMeaning of Cailen: Irish: 'slender'
Cailen is a unisex name most strongly associated with Irish naming. It has 6 letters and 2 syllables, and it is a genuinely rare and unique choice — 9129th most popular name in the United States in 2025.
US rank 2025
#9129
7 babies in 2025
England & Wales 2024
—
Fewer than 3 babies or unlisted
US babies since 1880
448
First recorded 1982 · peak 2009
Trend
stable
Style: rare
Popularity over time
Gender split
56% boys · 44% girls, based on US, UK and international usage.
Origins & cultures
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