Namewise

Liam vs Oisin

Liam 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.

  • Republic of Ireland · Boys

    In 2025, Liam was ranked #7 and Oisin #262 among boys in Republic of Ireland.

  • Northern Ireland · Boys

    In 2024, Liam was ranked #42 and Oisin #9 among boys in Northern Ireland.

  • Scotland · Boys

    In 2024, Liam was ranked #47 and Oisin #234 among boys in Scotland.

  • England and Wales · Boys

    In 2025, Liam was ranked #68 and Oisin #517 among boys in England and Wales.

Liam and Oisin over time

Liam and Oisin appear together in 3 published lists, across 119 years of shared records. Liam held the stronger position in more years in 2 of them, Oisin 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.

Liam reached its own highest recorded position earlier in 2 of those lists, Oisin in 1. 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.

List by list

  • Republic of Ireland · Boys61 shared years, 1964–2025

    Liam held the stronger position in 46 of those years, Oisin in 15.

    Highest recorded here: Liam #6 in 2021, Oisin #8 in 2016.

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

    Most recent shared year, 2025: Liam #7, Oisin #262.

  • England and Wales · Boys30 shared years, 1996–2025

    Liam held the stronger position in 30 of those years, Oisin in 0.

    Highest recorded here: Liam #10 in 1996, Oisin #433 in 2021.

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

    Most recent shared year, 2025: Liam #68, Oisin #517.

  • Northern Ireland · Boys28 shared years, 1997–2024

    Liam held the stronger position in 2 of those years, Oisin in 26.

    Highest recorded here: Liam #35 in 2008, Oisin #7 in 2022.

    The order changed in 2000: Oisin moved ahead. In 1999 they stood at #36 and #53; by 2000 that had become #52 and #32.

    Most recent shared year, 2024: Liam #42, 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.

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 Liam

Pairs where Liam 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.

Other pairs with the same kind of relationship

Pairs that qualify under the same rule as this one — one took the other's place near the top.

All one took the other's place near the top→

Other pairs from Northern Ireland lists

Pairs measured inside Northern Ireland's own published lists, where this pair's strongest relationship is also recorded. Positions in these lists are not comparable with another registrar's.

Northern Ireland overview→

Other pairs ranked together in the 2020s

Pairs both ranked in the same published list at some point between 2020 and 2029.

The 2020s across all registrars→

Side by side

Side-by-side comparison of Liam, Oisin
FieldLiamOisin
Record typeEditorially researched profileEditorially researched profile
Gender usagemalemale
MeaningA short form, inheriting its meaning from William — 'resolute protection' or 'will helmet'.Traditionally interpreted as 'little deer', combining an Old Irish word for deer or stag with a diminutive ending.
OriginIrish, short form of William (via Uilliam)Irish
Pronunciation/ˈliːəm//oʊˈʃiːn/
Syllables12
Common variants / nicknamesNot yet recordedNot yet recorded
Recorded regional usageAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZGB-ENW, GB-NIR, GB-SCT, IE
Most recent popularity observationNorway · Boys #7 (2025)Republic of Ireland · Boys #262 (2025)
Pronunciation clarity (demonstration score)90/10090/100
Spelling simplicity (demonstration score)95/10094/100
International familiarity (demonstration score)100/100100/100
Data Confidencemediummedium

What the data shows

  • Liam is recorded with a Irish, short form of William (via Uilliam) origin, while Oisin is recorded with a Irish origin.
  • Liam has 1 syllable, compared with 2 for Oisin.
  • Liam'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

Liam

Popularity journey

  1. First recorded1964

    First recorded at #54 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 recorded1986–2023

    Highest recorded position: #1 among boys in New Zealand, in 2010 (recorded 1986–2023).

    New Zealand · Boys

  3. Most recent2025

    Most recently recorded at #68 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