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Casyn
BoyMeaning of Casyn: American: modern variation of Kasen
Casyn is a boy's name most strongly associated with American naming. It has 5 letters and 2 syllables, and it is a genuinely rare and unique choice — 5030th most popular boys' name in the United States in 2025.
US rank 2025
#5030
18 babies in 2025
England & Wales 2024
—
Fewer than 3 babies or unlisted
US babies since 1880
536
First recorded 2000 · peak 2014
Trend
stable
Style: rare
Popularity over time
Gender split
95% boys · 5% girls, based on US, UK and international usage.
Origins & cultures
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