Oisin
Gender: Boy
Meaning: Deer, fawn
Origin: Irish
Popularity: Ranked #4660 in 2025 with 22 babies born.
History: Oisin is a name with Irish roots, related to the element 'ois' meaning deer, fawn.
Similar names: oshin, osian, oslin, osmin, ossian, ostin, oswin, osiah
Name length: 5 letters
How common is Oisin? About 1 in 151,296 babies born in 2025 were named Oisin, or roughly 0.1 per day in the United States.
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Frequently asked about Oisin
What does the name Oisin mean?
Oisin means “Deer, fawn” from Irish roots.
What is the origin of the name Oisin?
Oisin has Irish origin. The traditional meaning is “Deer, fawn”.
How popular is Oisin?
Oisin ranked #4539 in 2025 — given to 22 babies that year.
When was Oisin most popular?
Oisin peaked in 2020 with 31 babies registered that year.
Is Oisin a boy or girl name?
Oisin is predominantly a boys' name — over 90% of Oisins in registered births are male.
Is the name Oisin rising or falling in popularity?
Oisin has fallen 1000 spots in the rankings over the last 5 years — from #3539 in 2020 to #4539 in 2025.
How long has Oisin been recorded?
Oisin appears in birth records across 31 years — from 1991 through 2025.