Dylan vs Oisin
Dylan 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, Dylan was ranked #154 and Oisin #9 among boys in Northern Ireland.
England and Wales · Boys
In 2024, Dylan was ranked #64 and Oisin #630 among boys in England and Wales.
Republic of Ireland · Boys
In 2025, Dylan was ranked #69 and Oisin #262 among boys in Republic of Ireland.
Scotland · Boys
In 2024, Dylan was ranked #104 and Oisin #234 among boys in Scotland.
Dylan and Oisin over time
Dylan and Oisin appear together in 3 published lists, across 112 years of shared records. Dylan held the stronger position in more years in 3 of them, Oisin in 0.
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.
Dylan 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, Dylan moved into the top 50 at #26 in 2018 as Oisin fell out of it to #247, having been #11 the year before.
- One moved ahead of the other
In 2013, Oisin moved ahead of Dylan in Northern Ireland · Boys — #18 and #22 the year before became #27 and #22.
- Repeatedly exchanged positions
Dylan and Oisin changed places 5 times in Republic of Ireland · Boys between 1969 and 2025, ending at #69 and #262.
- Closest over the longest run
Across 28 shared years in Northern Ireland · Boys, Dylan and Oisin averaged 33.3 places apart, ending at #154 and #9.
- Longest-running competitions
Dylan and Oisin were both ranked in Republic of Ireland · Boys for 55 years, from 1969 to 2025, ending at #69 and #262.
List by list
Republic of Ireland · Boys55 shared years, 1969–2025
Dylan held the stronger position in 30 of those years, Oisin in 25.
Highest recorded here: Dylan #7 in 1998, Oisin #8 in 2016.
The order changed in 2018: Dylan moved ahead. In 2017 they stood at #29 and #11; by 2018 that had become #26 and #247.
Most recent shared year, 2025: Dylan #69, Oisin #262.
England and Wales · Boys29 shared years, 1996–2024
Dylan held the stronger position in 29 of those years, Oisin in 0.
Highest recorded here: Dylan #16 in 2010, Oisin #433 in 2021.
The order between them never changed and held in this list.
Most recent shared year, 2024: Dylan #64, Oisin #630.
Northern Ireland · Boys28 shared years, 1997–2024
Dylan held the stronger position in 16 of those years, Oisin in 12.
Highest recorded here: Dylan #7 in 2001, Oisin #7 in 2022.
The order changed in 2013: Oisin moved ahead. In 2012 they stood at #18 and #22; by 2013 that had become #27 and #22.
Most recent shared year, 2024: Dylan #154, 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 | Dylan | Oisin |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Traditionally associated with the sea/tide — popularly glossed as 'great tide' or 'born from the sea', reflecting the mythological figure's role. Some scholars theorise the figure may reflect an earlier, otherwise unattested Celtic sea god — treat as a proposed origin, not settled fact. | Traditionally interpreted as 'little deer', combining an Old Irish word for deer or stag with a diminutive ending. |
| Origin | Welsh | Irish |
| Pronunciation | /ˈdɪlən/ | /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, NZ | GB-ENW, GB-NIR, GB-SCT, IE |
| Most recent popularity observation | Republic of Ireland · Boys #69 (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
- Dylan is recorded with a Welsh origin, while Oisin is recorded with a Irish origin.
- Dylan and Oisin both have 2 syllables.
- Dylan'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
Dylan
Popularity journey
First recorded1969
First recorded at #246 among boys in Republic of Ireland in 1969 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1980–2020
Highest recorded position: #7 among boys in New Zealand, in 1992 (recorded 1980–2020).
New Zealand · Boys
Most recent2025
Most recently recorded at #69 among boys in Republic of Ireland, in 2025.
Republic of Ireland · 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 #262 among boys in Republic of Ireland, in 2025.
Republic of Ireland · Boys