Sibling names for Lucas
Names that sound like they belong in the same family as Lucas usually share its era. These sister and brother names rose and fell on a similar curve to Lucas, 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 Lucas
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Alaina | #224 | 7,110 | 2010s | |
| Genesis | origin, beginning | #66 | 17,832 | 2010s |
| Harmony | harmony | #276 | 6,530 | 2010s |
| Natalia | Christmas Day | #144 | 13,472 | 2010s |
| Mia | pet form of Maria | #6 | 56,885 | 2010s |
| Olivia | olive, olive tree | #1 | 78,162 | 2010s |
| Sophia | wisdom | #5 | 61,653 | 2010s |
| Kennedy | #85 | 15,418 | 2010s | |
| Riley | #48 | 23,880 | 2000s | |
| Presley | priest's clearing (place name) | #225 | 6,977 | 2010s |
Brother names for Lucas
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Tucker | cloth fuller (surname) | #181 | 9,675 | 2010s |
| Micah | who is like God? | #90 | 19,237 | 2010s |
| Damian | to tame | #109 | 16,516 | 2010s |
| Nolan | descendant of Nuallán (surname) | #65 | 25,157 | 2010s |
| Josiah | healed or supported by God | #54 | 28,435 | 2010s |
| Giovanni | God is gracious (Italian form of John) | #123 | 14,821 | 2010s |
| Wyatt | from Wigheard: war + hardy | #38 | 34,591 | 2010s |
| Sebastian | from Sebaste; 'venerable' | #16 | 44,425 | 2010s |
| Bryson | #152 | 13,153 | 2010s | |
| Braxton | #172 | 11,430 | 2010s | |
| Elijah | 'my God is Yahweh' | #7 | 58,811 | 2010s |
Lucas's era
Lucas ranked #10 for boys in 2025, against #16 in 2015. Its best year was 2018, at #8. A sibling name from the same wave will sound like it was chosen by the same parents; a name from an older or newer wave can make one child's name feel dated next to the other's.
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, Lucas included.
Girls: Elizabeth, Maria, Cecilia, Julia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Lucas
These names follow Lucas's curve too, but we left them out above because they share a first letter or an ending with Lucas. 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 Lucas's since 1880, and its recent number of babies is within about twelve times Lucas's, so the names are in the same league. Names starting with the same letter as Lucas or with the same ending are left out, so the names go together without matching. Spellings of Lucas itself are excluded.