Mia vs Sienna
Mia 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.
New South Wales, Australia · Girls
In 2025, Mia was ranked #5 and Sienna #10 among girls in New South Wales, Australia.
Republic of Ireland · Girls
In 2025, Mia was ranked #11 and Sienna #62 among girls in Republic of Ireland.
New Zealand · Girls
In 2023, Mia was ranked #13 and Sienna #53 among girls in New Zealand.
England and Wales · Girls
In 2024, Mia was ranked #14 and Sienna #19 among girls in England and Wales.
Northern Ireland · Girls
In 2024, Mia was ranked #20 and Sienna #30 among girls in Northern Ireland.
Norway · Girls
In 2025, Mia was ranked #21 and Sienna #136 among girls in Norway.
Scotland · Girls
In 2024, Mia was ranked #26 and Sienna #41 among girls in Scotland.
Mia and Sienna over time
Mia and Sienna appear together in 6 published lists, across 136 years of shared records. Mia held the stronger position in more years in 6 of them, Sienna in 0.
In none of those lists did their order change and stay changed.
Mia reached its own highest recorded position earlier in 5 of those lists, Sienna 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.
- Closest over the longest run
Across 23 shared years in New South Wales, Australia · Girls, Mia and Sienna averaged 13.0 places apart, ending at #5 and #10.
- Peaked in the same years
Both reached their highest recorded position in New South Wales, Australia · Girls within 2 years — Mia #2 in 2008, Sienna #7 in 2009.
List by list
England and Wales · Girls29 shared years, 1996–2024
Mia held the stronger position in 28 of those years, Sienna in 1.
Highest recorded here: Mia #5 in 2019, Sienna #12 in 2022.
The order between them never changed and held in this list.
Most recent shared year, 2024: Mia #14, Sienna #19.
New South Wales, Australia · Girls23 shared years, 2003–2025
Mia held the stronger position in 23 of those years, Sienna in 0.
Highest recorded here: Mia #2 in 2008, Sienna #7 in 2009.
The order between them never changed and held in this list.
Most recent shared year, 2025: Mia #5, Sienna #10.
Republic of Ireland · Girls23 shared years, 2002–2025
Mia held the stronger position in 23 of those years, Sienna in 0.
Highest recorded here: Mia #6 in 2012, Sienna #44 in 2022.
The order between them never changed and held in this list.
Most recent shared year, 2025: Mia #11, Sienna #62.
Northern Ireland · Girls21 shared years, 2004–2024
Mia held the stronger position in 21 of those years, Sienna in 0.
Highest recorded here: Mia #14 in 2015, Sienna #30 in 2024.
The order between them never changed and held in this list.
Most recent shared year, 2024: Mia #20, Sienna #30.
Norway · Girls21 shared years, 2005–2025
Mia held the stronger position in 21 of those years, Sienna in 0.
Highest recorded here: Mia #8 in 2011, Sienna #123 in 2024.
The order between them never changed and held in this list.
Most recent shared year, 2025: Mia #21, Sienna #136.
New Zealand · Girls19 shared years, 2005–2023
Mia held the stronger position in 18 of those years, Sienna in 1.
Highest recorded here: Mia #7 in 2017, Sienna #23 in 2009.
The order between them never changed and held in this list.
Most recent shared year, 2023: Mia #13, 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.
Side by side
| Field | Mia | Sienna |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | female | female |
| Meaning | Directly a diminutive of Maria. | From the English word for the orange-red colour, ultimately from the Italian city of Siena, known for its distinctive reddish clay. |
| Origin | Scandinavian/Italian, via Maria | English (colour/place name) |
| Pronunciation | /ˈmiːə/ | /si.ˈɛn.ə/ |
| Syllables | 1 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | New South Wales, Australia · Girls #5 (2025) | New South Wales, Australia · Girls #10 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 95/100 | 88/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Mia is recorded with a Scandinavian/Italian, via Maria origin, while Sienna is recorded with a English (colour/place name) origin.
- Mia has 1 syllable, compared with 2 for Sienna.
- Mia'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.
How each name got here
Mia
Popularity journey
First recorded1947
First recorded at #357 among girls in Norway in 1947 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Girls
Highest recorded1997–2025
Highest recorded position: #2 among girls in New South Wales, Australia, in 2008 (recorded 1997–2025).
New South Wales, Australia · Girls
Most recent2025
Most recently recorded at #5 among girls in New South Wales, Australia, in 2025.
New South Wales, Australia · Girls
Sienna
Popularity journey
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
Highest recorded2003–2025
Highest recorded position: #7 among girls in New South Wales, Australia, in 2009 (recorded 2003–2025).
New South Wales, Australia · Girls
Most recent2025
Most recently recorded at #10 among girls in New South Wales, Australia, in 2025.
New South Wales, Australia · Girls