Sibling names for Lachlan
Names that sound like they belong in the same family as Lachlan usually share its era. These sister and brother names rose and fell on a similar curve to Lachlan, whose busiest decade was the 2010s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Lachlan
Brother names for Lachlan
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Benaiah | #1,170 | 754 | 2010s | |
| Judah | praised | #178 | 10,474 | 2010s |
| Adiel | #1,141 | 846 | 2010s | |
| Jhett | #1,715 | 513 | 2010s | |
| Neev | #2,050 | 322 | 2010s | |
| Alistair | defender of men (via Alexander) | #897 | 1,275 | 2010s |
| Kyson | #471 | 3,351 | 2010s | |
| Whitaker | #2,181 | 294 | 2010s | |
| Atticus | man of Attica (Athenian) | #281 | 6,203 | 2010s |
| Zayn | beauty, grace | #253 | 6,712 | 2020s |
| Amen | #2,036 | 354 | 2010s |
Lachlan's era
Lachlan ranked #606 for boys in 2025, against #767 in 2015. Its best year was 2025, at #606. Names that rose and fell with it share its period feel, which keeps the set consistent.
Timeless names that go with any sibling
These names have been used steadily for a hundred years, so they sit comfortably next to a name from any era, Lachlan included.
Girls: Elizabeth, Maria, Cecilia, Julia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Lachlan
These names follow Lachlan's curve too, but we left them out above because they share a first letter or an ending with Lachlan. Some parents like that echo; if you do, start here.
How these were chosen
Each suggestion's share of US babies has followed a curve close to Lachlan's since 1880, and its recent number of babies is within about twelve times Lachlan's, so the names are in the same league. Names starting with the same letter as Lachlan or with the same ending are left out, so the names go together without matching. Spellings of Lachlan itself are excluded.