Oisin comes from the ModernAmerican / Multicultural tradition, meaning Little deer | Formal: Young deer warrior.
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How popular is Oisin?
2020peak year
Oisin has settled into a steady rhythm — neither rising sharply nor fading, holding a consistent place in U.S. birth records. It currently ranks well outside the top 1,000 (around #4484), with about 24 babies named Oisin each year. In 2020, 31 babies received the name (ranked #3546). Total registrations across all years since 1880: roughly 491.
Year-by-year registrations1880–2024 · U.S. Social Security data
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