Oisin vs Rhys
Oisin and Rhyscompared 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, Oisin was ranked #9 and Rhys #305 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2025, Oisin was ranked #262 and Rhys #179 among boys in Republic of Ireland.
Scotland · Boys
In 2024, Oisin was ranked #234 and Rhys #218 among boys in Scotland.
England and Wales · Boys
In 2025, Oisin was ranked #517 and Rhys #389 among boys in England and Wales.
Oisin and Rhys over time
Oisin and Rhys appear together in 3 published lists, across 94 years of shared records. Oisin held the stronger position in more years in 2 of them, Rhys in 1.
The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.
Rhys 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 moved ahead of the other
In 2018, Rhys moved ahead of Oisin in Republic of Ireland · Boys — #11 and #109 the year before became #247 and #144.
- Longest-running competitions
Oisin and Rhys were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #517 and #389.
- Started together, ended far apart
In 1997 they stood at #81 and #84 in Northern Ireland · Boys, 3 places apart; by 2024 they were #9 and #305.
List by list
Republic of Ireland · Boys36 shared years, 1988–2025
Oisin held the stronger position in 28 of those years, Rhys in 8.
Highest recorded here: Oisin #8 in 2016, Rhys #65 in 2010.
The order changed in 2018: Rhys moved ahead. In 2017 they stood at #11 and #109; by 2018 that had become #247 and #144.
Most recent shared year, 2025: Oisin #262, Rhys #179.
England and Wales · Boys30 shared years, 1996–2025
Oisin held the stronger position in 0 of those years, Rhys in 30.
Highest recorded here: Oisin #433 in 2021, Rhys #49 in 2006.
The order between them never changed and held in this list.
Most recent shared year, 2025: Oisin #517, Rhys #389.
Northern Ireland · Boys28 shared years, 1997–2024
Oisin held the stronger position in 28 of those years, Rhys in 0.
Highest recorded here: Oisin #7 in 2022, Rhys #25 in 2008.
The order between them never changed and held in this list.
Most recent shared year, 2024: Oisin #9, Rhys #305.
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 | Oisin | Rhys |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Traditionally interpreted as 'little deer', combining an Old Irish word for deer or stag with a diminutive ending. | Behind the Name hedges the meaning with 'probably' — possibly derived from a root meaning 'ardour' or 'enthusiasm'. |
| Origin | Irish | Welsh, from Old Welsh Ris |
| Pronunciation | /oʊˈʃiːn/ | /riːs/ |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ |
| Most recent popularity observation | Republic of Ireland · Boys #262 (2025) | Republic of Ireland · Boys #179 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 94/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Oisin is recorded with a Irish origin, while Rhys is recorded with a Welsh, from Old Welsh Ris origin.
- Oisin has 2 syllables, compared with 1 for Rhys.
- Oisin's recorded meaning differs from Rhys'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
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
Rhys
Popularity journey
First recorded1975
First recorded at #85 among boys in New Zealand in 1975 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New Zealand · Boys
Highest recorded1997–2024
Highest recorded position: #25 among boys in Northern Ireland, in 2008 (recorded 1997–2024).
Northern Ireland · Boys
Most recent2025
Most recently recorded at #389 among boys in England and Wales, in 2025.
England and Wales · Boys