Lachlan vs Liam
Lachlan and Liamcompared 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, Lachlan was ranked #317 and Liam #7 among boys in Republic of Ireland.
New South Wales, Australia · Boys
In 2025, Lachlan was ranked #34 and Liam #15 among boys in New South Wales, Australia.
New Zealand · Boys
In 2023, Lachlan was ranked #34 and Liam #17 among boys in New Zealand.
Northern Ireland · Boys
In 2024, Lachlan was ranked #278 and Liam #42 among boys in Northern Ireland.
Scotland · Boys
In 2024, Lachlan was ranked #88 and Liam #47 among boys in Scotland.
England and Wales · Boys
In 2024, Lachlan was ranked #328 and Liam #70 among boys in England and Wales.
Lachlan and Liam over time
Lachlan and Liam appear together in 5 published lists, across 131 years of shared records. Liam held the stronger position in more years in 4 of them, Lachlan in 1.
The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.
Lachlan reached its own highest recorded position earlier in 3 of those lists, Liam in 2. 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 2017, Liam moved ahead of Lachlan in New South Wales, Australia · Boys — #11 and #13 the year before became #12 and #11.
- Repeatedly exchanged positions
Lachlan and Liam changed places 5 times in New South Wales, Australia · Boys between 1983 and 2025, ending at #34 and #15.
- Closest over the longest run
Across 42 shared years in New South Wales, Australia · Boys, Lachlan and Liam averaged 10.0 places apart, ending at #34 and #15.
- Longest-running competitions
Lachlan and Liam were both ranked in New South Wales, Australia · Boys for 42 years, from 1983 to 2025, ending at #34 and #15.
List by list
New South Wales, Australia · Boys42 shared years, 1983–2025
Lachlan held the stronger position in 31 of those years, Liam in 11.
Highest recorded here: Lachlan #2 in 2005, Liam #6 in 2020.
The order changed in 2017: Liam moved ahead. In 2016 they stood at #11 and #13; by 2017 that had become #12 and #11.
Most recent shared year, 2025: Lachlan #34, Liam #15.
England and Wales · Boys29 shared years, 1996–2024
Lachlan held the stronger position in 0 of those years, Liam in 29.
Highest recorded here: Lachlan #328 in 2024, Liam #10 in 1996.
The order between them never changed and held in this list.
Most recent shared year, 2024: Lachlan #328, Liam #70.
New Zealand · Boys26 shared years, 1997–2023
Lachlan held the stronger position in 2 of those years, Liam in 24.
Highest recorded here: Lachlan #13 in 2018, Liam #1 in 2010.
The order between them never changed and held in this list.
Most recent shared year, 2023: Lachlan #34, Liam #17.
Republic of Ireland · Boys24 shared years, 1997–2025
Lachlan held the stronger position in 0 of those years, Liam in 24.
Highest recorded here: Lachlan #263 in 2016, Liam #6 in 2021.
The order between them never changed and held in this list.
Most recent shared year, 2025: Lachlan #317, Liam #7.
Northern Ireland · Boys10 shared years, 1998–2024
Lachlan held the stronger position in 0 of those years, Liam in 10.
Highest recorded here: Lachlan #226 in 2021, Liam #42 in 2024.
The order between them never changed and held in this list.
Most recent shared year, 2024: Lachlan #278, Liam #42.
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 | Lachlan | Liam |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Traditionally understood as 'Viking' or 'Scandinavian' via its root name — someone associated with the land of the Norsemen. A secondary reading of that root gives 'land of the lakes'. | A short form, inheriting its meaning from William — 'resolute protection' or 'will helmet'. |
| Origin | Scottish Gaelic (Anglicised), from Lochlann ('Scandinavia') | Irish, short form of William (via Uilliam) |
| Pronunciation | /ˈlɒklən/ | /ˈliːəm/ |
| Syllables | 2 | 1 |
| Common variants / nicknames | Not yet recorded | 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 | New South Wales, Australia · Boys #34 (2025) | Norway · Boys #7 (2025) |
| Pronunciation clarity (demonstration score) | 90/100 | 90/100 |
| Spelling simplicity (demonstration score) | 82/100 | 95/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Lachlan is recorded with a Scottish Gaelic (Anglicised), from Lochlann ('Scandinavia') origin, while Liam is recorded with a Irish, short form of William (via Uilliam) origin.
- Lachlan has 2 syllables, compared with 1 for Liam.
- Lachlan's recorded meaning differs from Liam's — see the table above for each.
- Both names have recorded usage in AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NZ.
How each name got here
Lachlan
Popularity journey
First recorded1982
First recorded at #95 among boys in New South Wales, Australia in 1982 — the earliest year that source publishes this name, not necessarily the earliest it was used.
New South Wales, Australia · Boys
Highest recorded1982–2025
Highest recorded position: #2 among boys in New South Wales, Australia, in 2005 (recorded 1982–2025).
New South Wales, Australia · Boys
Most recent2025
Most recently recorded at #34 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys
Liam
Popularity journey
First recorded1964
First recorded at #54 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 recorded1986–2023
Highest recorded position: #1 among boys in New Zealand, in 2010 (recorded 1986–2023).
New Zealand · Boys
Most recent2025
Most recently recorded at #15 among boys in New South Wales, Australia, in 2025.
New South Wales, Australia · Boys