Namewise

Isabella vs Sienna

Isabella and Siennacompared 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.

  • England and Wales · Girls

    In 2025, Isabella was ranked #10 and Sienna #15 among girls in England and Wales.

  • New South Wales, Australia · Girls

    In 2025, Isabella was ranked #17 and Sienna #10 among girls in New South Wales, Australia.

  • New Zealand · Girls

    In 2023, Isabella was ranked #15 and Sienna #53 among girls in New Zealand.

  • Northern Ireland · Girls

    In 2024, Isabella was ranked #44 and Sienna #30 among girls in Northern Ireland.

  • Scotland · Girls

    In 2024, Isabella was ranked #50 and Sienna #41 among girls in Scotland.

  • Republic of Ireland · Girls

    In 2025, Isabella was ranked #48 and Sienna #62 among girls in Republic of Ireland.

  • Norway · Girls

    In 2025, Isabella was ranked #122 and Sienna #136 among girls in Norway.

Isabella and Sienna over time

Isabella and Sienna appear together in 6 published lists, across 137 years of shared records. Isabella held the stronger position in more years in 6 of them, Sienna 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.

Isabella reached its own highest recorded position earlier in 6 of those lists, and Sienna 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 2025, Sienna moved ahead of Isabella in New South Wales, Australia · Girls — #12 and #13 the year before became #17 and #10.

  • Closest over the longest run

    Across 23 shared years in New South Wales, Australia · Girls, Isabella and Sienna averaged 11.2 places apart, ending at #17 and #10.

  • Longest-running competitions

    Isabella and Sienna were both ranked in England and Wales · Girls for 30 years, from 1996 to 2025, ending at #10 and #15.

  • Peaked in the same years

    Both reached their highest recorded position in New South Wales, Australia · Girls within 2 years — Isabella #1 in 2007, Sienna #7 in 2009.

List by list

  • England and Wales · Girls30 shared years, 1996–2025

    Isabella held the stronger position in 30 of those years, Sienna in 0.

    Highest recorded here: Isabella #6 in 2016, Sienna #12 in 2022.

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

    Most recent shared year, 2025: Isabella #10, Sienna #15.

  • New South Wales, Australia · Girls23 shared years, 2003–2025

    Isabella held the stronger position in 20 of those years, Sienna in 3.

    Highest recorded here: Isabella #1 in 2007, Sienna #7 in 2009.

    The order changed in 2025: Sienna moved ahead. In 2024 they stood at #12 and #13; by 2025 that had become #17 and #10.

    Most recent shared year, 2025: Isabella #17, Sienna #10.

  • Republic of Ireland · Girls23 shared years, 2002–2025

    Isabella held the stronger position in 22 of those years, Sienna in 1.

    Highest recorded here: Isabella #41 in 2014, Sienna #44 in 2022.

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

    Most recent shared year, 2025: Isabella #48, Sienna #62.

  • Northern Ireland · Girls21 shared years, 2004–2024

    Isabella held the stronger position in 18 of those years, Sienna in 3.

    Highest recorded here: Isabella #27 in 2019, Sienna #30 in 2024.

    The order changed in 2024: Sienna moved ahead. In 2023 they stood at #39 and #49; by 2024 that had become #44 and #30.

    Most recent shared year, 2024: Isabella #44, Sienna #30.

  • Norway · Girls21 shared years, 2005–2025

    Isabella held the stronger position in 21 of those years, Sienna in 0.

    Highest recorded here: Isabella #42 in 2010, Sienna #123 in 2024.

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

    Most recent shared year, 2025: Isabella #122, Sienna #136.

  • New Zealand · Girls19 shared years, 2005–2023

    Isabella held the stronger position in 19 of those years, Sienna in 0.

    Highest recorded here: Isabella #4 in 2008, Sienna #23 in 2009.

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

    Most recent shared year, 2023: Isabella #15, Sienna #53.

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 Isabella

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

Other comparisons involving Sienna

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

  • Sienna vs Layla

    Sienna and Layla both rose over the same years in 4 registrars — England and Wales · Girls; New South Wales, Australia · Girls; Northern Ireland · Girls; Republic of Ireland · Girls. Each list is measured against its own starting position; the positions are never combined.

    Sienna · Layla · 30 shared years, 1996–2025 · Moved together in several countries

  • Poppy vs Sienna

    Poppy and Sienna both rose over the same years in 4 registrars — England and Wales · Girls; New Zealand · Girls; Northern Ireland · Girls; Republic of Ireland · Girls. Each list is measured against its own starting position; the positions are never combined.

    Poppy · Sienna · 30 shared years, 1996–2025 · Moved together in several countries

  • Sienna vs Sofia

    Sienna and Sofia both rose over the same years in 4 registrars — England and Wales · Girls; New South Wales, Australia · Girls; Northern Ireland · Girls; Republic of Ireland · Girls. Each list is measured against its own starting position; the positions are never combined.

    Sienna · Sofia · 30 shared years, 1996–2025 · Moved together in several countries

  • Sienna vs Arabella

    Sienna and Arabella both rose over the same years in 3 registrars — England and Wales · Girls; Northern Ireland · Girls; Republic of Ireland · Girls. Each list is measured against its own starting position; the positions are never combined.

    Sienna · Arabella · 30 shared years, 1996–2025 · Moved together in several countries

Other pairs with the same kind of relationship

Pairs that qualify under the same rule as this one — peaked in the same years.

All peaked in the same years→

Other pairs from New South Wales, Australia lists

Pairs measured inside New South Wales, Australia'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 South Wales, Australia 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 Isabella, Sienna
FieldIsabellaSienna
Record typeEditorially researched profileEditorially researched profile
Gender usagefemalefemale
MeaningMy God is an oath (via Elizabeth).From the English word for the orange-red colour, ultimately from the Italian city of Siena, known for its distinctive reddish clay.
OriginSpanish/Italian, via ElizabethEnglish (colour/place name)
Pronunciation/ˌɪzəˈbɛlə//si.ˈɛn.ə/
Syllables42
Common variants / nicknamesBella, Izzy, Isabel, IsobelNot 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 observationEngland and Wales · Girls #10 (2025)New South Wales, Australia · Girls #10 (2025)
Pronunciation clarity (demonstration score)90/10090/100
Spelling simplicity (demonstration score)76/10088/100
International familiarity (demonstration score)100/100100/100
Data Confidencehighmedium

What the data shows

  • Isabella is recorded with a Spanish/Italian, via Elizabeth origin, while Sienna is recorded with a English (colour/place name) origin.
  • Isabella has 4 syllables, compared with 2 for Sienna.
  • Isabella's recorded meaning differs from Sienna'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 Isabella a "high" Data Confidence level and Sienna a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.

How each name got here

Isabella

Popularity journey

  1. First recorded1960

    First recorded at #472 among girls in Norway in 1960 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Norway · Girls

  2. Highest recorded1993–2025

    Highest recorded position: #1 among girls in New South Wales, Australia, in 2007 (recorded 1993–2025).

    New South Wales, Australia · Girls

  3. Most recent2025

    Most recently recorded at #10 among girls in England and Wales, in 2025.

    England and Wales · Girls

Sienna

Popularity journey

  1. First recorded1996

    First recorded at #974 among girls in England and Wales in 1996 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    England and Wales · Girls

  2. Highest recorded2003–2025

    Highest recorded position: #7 among girls in New South Wales, Australia, in 2009 (recorded 2003–2025).

    New South Wales, Australia · Girls

  3. Most recent2025

    Most recently recorded at #15 among girls in England and Wales, in 2025.

    England and Wales · Girls