Aiden vs Iain
Aiden and Iaincompared 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 · Boys
In 2021, Aiden was ranked #124 and Iain #3990 among boys in England and Wales.
Scotland · Boys
In 2024, Aiden was ranked #135 and Iain #727 among boys in Scotland.
Republic of Ireland · Boys
In 2011, Aiden was ranked #196 and Iain #623 among boys in Republic of Ireland.
Northern Ireland · Boys
In 2007, Aiden was ranked #357 and Iain #315 among boys in Northern Ireland.
Aiden and Iain over time
Aiden and Iain appear together in 2 published lists, across 62 years of shared records. Aiden held the stronger position in more years in 2 of them, Iain in 0.
In none of those lists did their order change and stay changed.
Each reached its own highest recorded position first in 1 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.
- Repeatedly exchanged positions
Aiden and Iain changed places 8 times in Republic of Ireland · Boys between 1965 and 2011, ending at #196 and #623.
- Longest-running competitions
Aiden and Iain were both ranked in Republic of Ireland · Boys for 37 years, from 1965 to 2011, ending at #196 and #623.
List by list
Republic of Ireland · Boys37 shared years, 1965–2011
Aiden held the stronger position in 28 of those years, Iain in 7.
Highest recorded here: Aiden #92 in 1968, Iain #186 in 1988.
The order between them never changed and held in this list.
Most recent shared year, 2011: Aiden #196, Iain #623.
England and Wales · Boys25 shared years, 1996–2021
Aiden held the stronger position in 25 of those years, Iain in 0.
Highest recorded here: Aiden #61 in 2011, Iain #319 in 1996.
The order between them never changed and held in this list.
Most recent shared year, 2021: Aiden #124, Iain #3990.
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 | Aiden | Iain |
|---|---|---|
| Record type | Official statistical record (evidence-only) | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | Not yet recorded | Not yet recorded |
| Origin | Not yet recorded | Not yet recorded |
| Pronunciation | Not yet recorded | Not yet recorded |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ | GB-ENW, GB-NIR, GB-SCT, IE |
| Most recent popularity observation | Republic of Ireland · Boys #149 (2025) | Scotland · Boys #727 (2024) |
| Pronunciation clarity (demonstration score) | Not yet recorded | Not yet recorded |
| Spelling simplicity (demonstration score) | 94/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Aiden has 2 syllables, compared with 1 for Iain.
- Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.
How each name got here
Aiden
Popularity journey
First recorded1964
First recorded at #94 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
Highest recorded1999–2024
Highest recorded position: #33 among boys in New South Wales, Australia, in 2010 (recorded 1999–2024).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #301 among boys in Norway, in 2025.
Norway · Boys
Iain
Popularity journey
First recorded1965
First recorded at #250 among boys in Republic of Ireland in 1965 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Republic of Ireland · Boys
Highest recorded1965–2011
Highest recorded position: #186 among boys in Republic of Ireland, in 1988 (recorded 1965–2011).
Republic of Ireland · Boys
Most recent2021
Most recently recorded at #3990 among boys in England and Wales, in 2021.
England and Wales · Boys