Sibling names for Liam
Names that sound like they belong in the same family as Liam usually share its era. These sister and brother names rose and fell on a similar curve to Liam, 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 Liam
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Camila | feminine form of Camillus | #19 | 37,834 | 2010s |
| Valentina | feminine of Valentinus | #35 | 21,268 | 2010s |
| Quinn | descendant of Conn (surname) | #97 | 14,494 | 2010s |
| Ellie | pet form of Eleanor, Elizabeth, etc. | #24 | 30,119 | 2010s |
| Scarlett | scarlet (surname for a cloth dealer) | #32 | 31,763 | 2010s |
| Emery | #74 | 15,424 | 2010s | |
| Delilah | #51 | 20,075 | 2010s | |
| Paisley | #67 | 19,166 | 2010s | |
| Kinsley | Cyne's clearing (place name) | #93 | 16,402 | 2010s |
| Eden | the Garden of Eden | #70 | 14,174 | 2010s |
| Harper | harp player (surname) | #16 | 38,660 | 2010s |
Brother names for Liam
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Hudson | son of Hudd (surname) | #17 | 40,102 | 2010s |
| Declan | #139 | 15,141 | 2010s | |
| Axel | #79 | 21,808 | 2010s | |
| Grayson | son of the steward (surname) | #51 | 33,259 | 2010s |
| Weston | west farmstead (place name) | #55 | 22,432 | 2010s |
| Asher | happy, fortunate | #28 | 40,300 | 2010s |
| Sawyer | one who saws wood (surname) | #122 | 14,725 | 2010s |
| Amir | commander, prince | #105 | 16,947 | 2010s |
| Kai | #93 | 23,060 | 2010s | |
| Jameson | son of James | #137 | 17,521 | 2010s |
| Santiago | Saint James | #26 | 32,458 | 2020s |
| Emiliano | of the Aemilius family | #94 | 14,356 | 2020s |
Liam's era
Liam ranked #1 for boys in 2025, against #2 in 2015. Its best year was 2017, at #1. 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, Liam included.
Girls: Elizabeth, Maria, Cecilia, Julia, Nina, Carmen. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Liam
These names follow Liam's curve too, but we left them out above because they share a first letter or an ending with Liam. Some parents like that echo; if you do, start here.
- Lyla same first letter as Liam
How these were chosen
Each suggestion's share of US babies has followed a curve close to Liam's since 1880, and its recent number of babies is within about twelve times Liam's, so the names are in the same league. Names starting with the same letter as Liam or with the same ending are left out, so the names go together without matching. Spellings of Liam itself are excluded.