Kieran vs Louis
Kieran and Louiscompared 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 2025, Kieran was ranked #639 and Louis #49 among boys in England and Wales.
New Zealand · Boys
In 2000, Kieran was ranked #88 and Louis #92 among boys in New Zealand.
Scotland · Boys
In 2024, Kieran was ranked #246 and Louis #98 among boys in Scotland.
Northern Ireland · Boys
In 2023, Kieran was ranked #395 and Louis #106 among boys in Northern Ireland.
Republic of Ireland · Boys
In 2025, Kieran was ranked #348 and Louis #115 among boys in Republic of Ireland.
Kieran and Louis over time
Kieran and Louis appear together in 3 published lists, across 118 years of shared records. Louis held the stronger position in more years in 2 of them, Kieran 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.
Kieran reached its own highest recorded position earlier in 3 of those lists, and Louis 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 2004, Louis moved ahead of Kieran in England and Wales · Boys — #37 and #41 the year before became #40 and #38.
- Longest-running competitions
Kieran and Louis were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #639 and #49.
List by list
Republic of Ireland · Boys62 shared years, 1964–2025
Kieran held the stronger position in 43 of those years, Louis in 18.
Highest recorded here: Kieran #28 in 1967, Louis #64 in 2018.
The order changed in 2007: Louis moved ahead. In 2006 they stood at #104 and #114; by 2007 that had become #94 and #86.
Most recent shared year, 2025: Kieran #348, Louis #115.
England and Wales · Boys30 shared years, 1996–2025
Kieran held the stronger position in 8 of those years, Louis in 22.
Highest recorded here: Kieran #26 in 1996, Louis #38 in 2004.
The order changed in 2004: Louis moved ahead. In 2003 they stood at #37 and #41; by 2004 that had become #40 and #38.
Most recent shared year, 2025: Kieran #639, Louis #49.
Northern Ireland · Boys26 shared years, 1997–2023
Kieran held the stronger position in 3 of those years, Louis in 22.
Highest recorded here: Kieran #90 in 1998, Louis #84 in 2004.
The order changed in 2000: Louis moved ahead. In 1999 they stood at #104 and #134; by 2000 that had become #133 and #113.
Most recent shared year, 2023: Kieran #395, Louis #106.
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 | Kieran | Louis |
|---|---|---|
| Record type | Editorially researched profile | Official statistical record (evidence-only) |
| Gender usage | male | male |
| Meaning | The Anglicized form of Ciarán, itself a diminutive of Ciar ('black, dark') — the same underlying name as the cohort's own Ciaran, spelled via the more common English-world transliteration. | Not yet recorded |
| Origin | Irish; shares Ciaran's root, this being the more widely used English-world spelling of the two | Not yet recorded |
| Pronunciation | /ˈkɪɹ.ən/ | Not yet recorded |
| Syllables | 2 | 1 |
| Common variants / nicknames | Ciarán, Kieron, Kyran, Keiran | Not yet recorded |
| Recorded regional usage | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Republic of Ireland · Boys #348 (2025) | England and Wales · Boys #49 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | Not yet recorded |
| Spelling simplicity (demonstration score) | 88/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | high | medium |
What the data shows
- Kieran has a recorded origin (Irish; shares Ciaran's root, this being the more widely used English-world spelling of the two); Louis does not have one recorded yet.
- Kieran has 2 syllables, compared with 1 for Louis.
- A meaning is recorded for Kieran; Louis doesn't have one written yet.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ.
- The available evidence gives Kieran a "high" Data Confidence level and Louis a "medium" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.
How each name got here
Kieran
Popularity journey
First recorded1964
First recorded at #32 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 recorded1996–2025
Highest recorded position: #26 among boys in England and Wales, in 1996 (recorded 1996–2025).
England and Wales · Boys
Most recent2025
Most recently recorded at #639 among boys in England and Wales, in 2025.
England and Wales · Boys
Louis
Popularity journey
First recorded1946
First recorded at #334 among boys in Norway in 1946 — the earliest year that source publishes this name, not necessarily the earliest it was used.
Norway · Boys
Highest recorded1996–2025
Highest recorded position: #38 among boys in England and Wales, in 2004 (recorded 1996–2025).
England and Wales · Boys
Most recent2025
Most recently recorded at #49 among boys in England and Wales, in 2025.
England and Wales · Boys