Aaron vs Oisin
Aaron and Oisincompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.
Head to head
Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.
Northern Ireland · Boys
In 2024, Aaron was ranked #187 and Oisin #9 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2025, Aaron was ranked #71 and Oisin #262 among boys in Republic of Ireland.
Scotland · Boys
In 2024, Aaron was ranked #114 and Oisin #234 among boys in Scotland.
England and Wales · Boys
In 2025, Aaron was ranked #180 and Oisin #517 among boys in England and Wales.
Aaron and Oisin over time
Aaron and Oisin appear together in 3 published lists, across 118 years of shared records. Aaron held the stronger position in more years in 2 of them, Oisin in 1.
The order between them changed and held in 2 of those lists — a change in that published list, never a claim that one name displaced the other.
Aaron reached its own highest recorded position earlier in 3 of those lists, and Oisin in none. Each position is a place inside its own list, so this compares when they peaked and never how high.
Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.
How this pair is related
The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.
- One took the other's place near the top
In Republic of Ireland · Boys, Aaron moved into the top 50 at #34 in 2018 as Oisin fell out of it to #247, having been #11 the year before.
- One moved ahead of the other
In 2010, Oisin moved ahead of Aaron in Northern Ireland · Boys — #14 and #28 the year before became #25 and #23.
- Repeatedly exchanged positions
Aaron and Oisin changed places 7 times in Republic of Ireland · Boys between 1965 and 2025, ending at #71 and #262.
- Closest over the longest run
Across 28 shared years in Northern Ireland · Boys, Aaron and Oisin averaged 44.6 places apart, ending at #187 and #9.
- Longest-running competitions
Aaron and Oisin were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #180 and #517.
List by list
Republic of Ireland · Boys60 shared years, 1965–2025
Aaron held the stronger position in 47 of those years, Oisin in 12.
Highest recorded here: Aaron #6 in 1998, Oisin #8 in 2016.
The order changed in 2018: Aaron moved ahead. In 2017 they stood at #31 and #11; by 2018 that had become #34 and #247.
Most recent shared year, 2025: Aaron #71, Oisin #262.
England and Wales · Boys30 shared years, 1996–2025
Aaron held the stronger position in 30 of those years, Oisin in 0.
Highest recorded here: Aaron #31 in 1998, Oisin #433 in 2021.
The order between them never changed and held in this list.
Most recent shared year, 2025: Aaron #180, Oisin #517.
Northern Ireland · Boys28 shared years, 1997–2024
Aaron held the stronger position in 13 of those years, Oisin in 15.
Highest recorded here: Aaron #8 in 2000, Oisin #7 in 2022.
The order changed in 2010: Oisin moved ahead. In 2009 they stood at #14 and #28; by 2010 that had become #25 and #23.
Most recent shared year, 2024: Aaron #187, Oisin #9.
Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.
Side by side
| Field | Aaron | Oisin |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Best known as the name of Moses's elder brother and the first high priest of Israel in the Old Testament; the literal meaning of the name itself is not reliably established. | Traditionally interpreted as 'little deer', combining an Old Irish word for deer or stag with a diminutive ending. |
| Origin | Biblical Hebrew (likely of Egyptian origin) | Irish |
| Pronunciation | /ˈɛrən/ | /oʊˈʃiːn/ |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | GB-ENW, GB-NIR, GB-SCT, IE |
| Most recent popularity observation | Republic of Ireland · Boys #71 (2025) | Republic of Ireland · Boys #262 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 94/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Aaron is recorded with a Biblical Hebrew (likely of Egyptian origin) origin, while Oisin is recorded with a Irish origin.
- Aaron and Oisin both have 2 syllables.
- Aaron's recorded meaning differs from Oisin's — see the table above for each.
- Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.
How each name got here
Aaron
Popularity journey
First recorded1965
First recorded at #222 among boys in Republic of Ireland in 1965 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1965–2025
Highest recorded position: #6 among boys in Republic of Ireland, in 1998 (recorded 1965–2025).
Republic of Ireland · Boys
Most recent2025
Most recently recorded at #180 among boys in England and Wales, in 2025.
England and Wales · Boys
Oisin
Popularity journey
First recorded1964
First recorded at #232 among boys in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1997–2024
Highest recorded position: #7 among boys in Northern Ireland, in 2022 (recorded 1997–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #517 among boys in England and Wales, in 2025.
England and Wales · Boys