Namewise

Jack vs Thomas

Jack and Thomascompared 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, Jack was ranked #2 and Thomas #16 among boys in Republic of Ireland.

  • New Zealand · Boys

    In 2023, Jack was ranked #4 and Thomas #18 among boys in New Zealand.

  • Northern Ireland · Boys

    In 2024, Jack was ranked #4 and Thomas #11 among boys in Northern Ireland.

  • Scotland · Boys

    In 2024, Jack was ranked #7 and Thomas #20 among boys in Scotland.

  • New South Wales, Australia · Boys

    In 2025, Jack was ranked #10 and Thomas #13 among boys in New South Wales, Australia.

  • England and Wales · Boys

    In 2025, Jack was ranked #24 and Thomas #35 among boys in England and Wales.

  • Norway · Boys

    In 2025, Jack was ranked #432 and Thomas #106 among boys in Norway.

Jack and Thomas over time

Jack and Thomas appear together in 6 published lists, across 265 years of shared records. Jack held the stronger position in more years in 5 of them, Thomas in 1.

The order between them changed and held in 3 of those lists — a change in that published list, never a claim that one name displaced the other.

Each reached its own highest recorded position first in 3 of the lists they share.

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 1998, Jack moved ahead of Thomas in New Zealand · Boys — #12 and #8 the year before became #6 and #10.

  • Repeatedly exchanged positions

    Jack and Thomas changed places 5 times in Norway · Boys between 1945 and 2025, ending at #432 and #106.

  • Closest over the longest run

    Across 30 shared years in England and Wales · Boys, Jack and Thomas averaged 3.5 places apart, ending at #24 and #35.

  • Mirrored each other

    Over 36 shared years in New Zealand · Boys, Jack rose about as far as Thomas fell — from #78 and #11 in 1988 to #4 and #18 in 2023.

  • Longest-running competitions

    Jack and Thomas were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #24 and #35.

  • Peaked in the same years

    Both reached their highest recorded position in England and Wales · Boys within 2 years — Jack #1 in 1996, Thomas #2 in 1998.

List by list

  • Norway · Boys78 shared years, 1945–2025

    Jack held the stronger position in 3 of those years, Thomas in 75.

    Highest recorded here: Jack #151 in 1956, Thomas #1 in 1974.

    The order changed in 1953: Thomas moved ahead. In 1952 they stood at #182 and #192; by 1953 that had become #171 and #150.

    Most recent shared year, 2025: Jack #432, Thomas #106.

  • Republic of Ireland · Boys53 shared years, 1970–2025

    Jack held the stronger position in 30 of those years, Thomas in 23.

    Highest recorded here: Jack #1 in 2000, Thomas #6 in 1970.

    The order changed in 1996: Jack moved ahead. In 1995 they stood at #19 and #17; by 1996 that had become #12 and #15.

    Most recent shared year, 2025: Jack #2, Thomas #16.

  • New South Wales, Australia · Boys40 shared years, 1986–2025

    Jack held the stronger position in 29 of those years, Thomas in 11.

    Highest recorded here: Jack #1 in 2003, Thomas #3 in 2000.

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

    Most recent shared year, 2025: Jack #10, Thomas #13.

  • New Zealand · Boys36 shared years, 1988–2023

    Jack held the stronger position in 26 of those years, Thomas in 10.

    Highest recorded here: Jack #1 in 2005, Thomas #4 in 2001.

    The order changed in 1998: Jack moved ahead. In 1997 they stood at #12 and #8; by 1998 that had become #6 and #10.

    Most recent shared year, 2023: Jack #4, Thomas #18.

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

    Jack held the stronger position in 30 of those years, Thomas in 0.

    Highest recorded here: Jack #1 in 1996, Thomas #2 in 1998.

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

    Most recent shared year, 2025: Jack #24, Thomas #35.

  • Northern Ireland · Boys28 shared years, 1997–2024

    Jack held the stronger position in 28 of those years, Thomas in 0.

    Highest recorded here: Jack #1 in 2001, Thomas #6 in 2020.

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

    Most recent shared year, 2024: Jack #4, Thomas #11.

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 Jack

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

Other comparisons involving Thomas

Pairs where Thomas 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 moved ahead of the other.

All one moved ahead of the other→

Other pairs from New Zealand lists

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

New Zealand 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 Jack, Thomas
FieldJackThomas
Record typeEditorially researched profileEditorially researched profile
Gender usagemalemale
MeaningGod is gracious (via John), though now used as an independent name.The Greek form of the Aramaic name meaning 'twin'.
OriginEnglish, historically a diminutive of JohnAramaic, via Greek
Pronunciation/ˈdʒæk//ˈtɑməs/
Syllables12
Common variants / nicknamesJankinNot yet recorded
Recorded regional usageAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ
Most recent popularity observationRepublic of Ireland · Boys #2 (2025)New South Wales, Australia · Boys #13 (2025)
Pronunciation clarity (demonstration score)90/10090/100
Spelling simplicity (demonstration score)95/10088/100
International familiarity (demonstration score)100/100100/100
Data Confidencehighmedium

What the data shows

  • Jack is recorded with a English, historically a diminutive of John origin, while Thomas is recorded with a Aramaic, via Greek origin.
  • Jack has 1 syllable, compared with 2 for Thomas.
  • Jack's recorded meaning differs from Thomas's — see the table above for each.
  • Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ.
  • The available evidence gives Jack a "high" Data Confidence level and Thomas a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.

How each name got here

Jack

Popularity journey

  1. First recorded1945

    First recorded at #171 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Norway · Boys

  2. Highest recorded1996–2025

    Highest recorded position: #1 among boys in England and Wales, in 1996 (recorded 1996–2025).

    England and Wales · Boys

  3. Most recent2025

    Most recently recorded at #24 among boys in England and Wales, in 2025.

    England and Wales · Boys

Thomas

Popularity journey

  1. First recorded1945

    First recorded at #177 among boys in Norway in 1945 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Norway · Boys

  2. Highest recorded1945–2025

    Highest recorded position: #1 among boys in Norway, in 1974 (recorded 1945–2025).

    Norway · Boys

  3. Most recent2025

    Most recently recorded at #35 among boys in England and Wales, in 2025.

    England and Wales · Boys