Namewise

Dean vs Oisin

Dean 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 2023, Dean was ranked #348 and Oisin #7 among boys in Northern Ireland.

  • Scotland · Boys

    In 2024, Dean was ranked #727 and Oisin #234 among boys in Scotland.

  • Republic of Ireland · Boys

    In 2025, Dean was ranked #432 and Oisin #262 among boys in Republic of Ireland.

  • England and Wales · Boys

    In 2025, Dean was ranked #782 and Oisin #517 among boys in England and Wales.

Dean and Oisin over time

Dean and Oisin appear together in 3 published lists, across 113 years of shared records. Dean 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.

Dean 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 1999, Oisin moved ahead of Dean in Northern Ireland · Boys — #51 and #58 the year before became #64 and #53.

  • Repeatedly exchanged positions

    Dean and Oisin changed places 12 times in Republic of Ireland · Boys between 1966 and 2025, ending at #432 and #262.

  • Closest over the longest run

    Across 59 shared years in Republic of Ireland · Boys, Dean and Oisin averaged 52.8 places apart, ending at #432 and #262.

  • Longest-running competitions

    Dean and Oisin were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #782 and #517.

List by list

  • Republic of Ireland · Boys59 shared years, 19662025

    Dean held the stronger position in 30 of those years, Oisin in 28.

    Highest recorded here: Dean #24 in 1993, Oisin #8 in 2016.

    The order between them never changed and held in this list.

    Most recent shared year, 2025: Dean #432, Oisin #262.

  • England and Wales · Boys30 shared years, 19962025

    Dean held the stronger position in 23 of those years, Oisin in 6.

    Highest recorded here: Dean #80 in 1996, Oisin #433 in 2021.

    The order changed in 2021: Oisin moved ahead. In 2020 they stood at #656 and #766; by 2021 that had become #592 and #433.

    Most recent shared year, 2025: Dean #782, Oisin #517.

  • Northern Ireland · Boys24 shared years, 19972023

    Dean held the stronger position in 2 of those years, Oisin in 22.

    Highest recorded here: Dean #45 in 1997, Oisin #7 in 2022.

    The order changed in 1999: Oisin moved ahead. In 1998 they stood at #51 and #58; by 1999 that had become #64 and #53.

    Most recent shared year, 2023: Dean #348, Oisin #7.

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.

Where to go next

Comparisons that share a name, a rule or a published list with this one. Each is an existing comparison page with its own evidence — nothing here says these pairs are alike.

Other comparisons involving Dean

Pairs where Dean shares a published list with another name, each measured inside one registrar's own list.

Other comparisons involving Oisin

Pairs where Oisin shares a published list with another name, each measured inside one registrar's own list.

Side by side

Side-by-side comparison of Dean, Oisin
FieldDeanOisin
Record typeOfficial statistical record (evidence-only)Editorially researched profile
Gender usagemalemale
MeaningNot yet recordedTraditionally interpreted as 'little deer', combining an Old Irish word for deer or stag with a diminutive ending.
OriginNot yet recordedIrish
Pronunciation/oʊˈʃiːn/
Syllables12
Common variants / nicknamesNot yet recordedNot yet recorded
Recorded regional usageAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZGB-ENW, GB-NIR, GB-SCT, IE
Most recent popularity observationRepublic of Ireland · Boys #432 (2025)Republic of Ireland · Boys #262 (2025)
Pronunciation clarity (demonstration score)Not yet recorded90/100
Spelling simplicity (demonstration score)95/10094/100
International familiarity (demonstration score)100/100100/100
Data Confidencemediummedium

What the data shows

  • Oisin has a recorded origin (Irish); Dean does not have one recorded yet.
  • Dean has 1 syllable, compared with 2 for Oisin.
  • A meaning is recorded for Oisin; Dean doesn't have one written yet.
  • Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.

How each name got here

Dean

Popularity journey

  1. First recorded1956

    First recorded at #95 among boys in New Zealand in 1956 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    New Zealand · Boys

  2. Highest recorded1956–1991

    Highest recorded position: #13 among boys in New Zealand, in 1967 (recorded 1956–1991).

    New Zealand · Boys

  3. Most recent2025

    Most recently recorded at #782 among boys in England and Wales, in 2025.

    England and Wales · Boys

Oisin

Popularity journey

  1. 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

  2. Highest recorded1997–2024

    Highest recorded position: #7 among boys in Northern Ireland, in 2022 (recorded 1997–2024).

    Northern Ireland · Boys

  3. Most recent2025

    Most recently recorded at #517 among boys in England and Wales, in 2025.

    England and Wales · Boys