Sibling names for Leo
Names that sound like they belong in the same family as Leo usually share its era. These sister and brother names rose and fell on a similar curve to Leo, whose busiest decade was the 2020s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Leo
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Hazel | the hazel tree | #21 | 31,119 | 1920s |
| Violet | the violet flower | #13 | 32,903 | 2010s |
| Ophelia | help (Greek, via an Italian coinage) | #264 | 5,766 | 2020s |
| Genevieve | #148 | 9,171 | 1920s | |
| Vera | #205 | 6,819 | 1920s | |
| Ruby | ruby (the red gemstone) | #64 | 17,671 | 1920s |
| Stella | star | #52 | 22,450 | 2010s |
| Josephine | feminine of Joseph: God will add | #53 | 17,919 | 1920s |
| Esther | #119 | 10,458 | 1920s | |
| Adeline | noble | #59 | 16,287 | 2010s |
Brother names for Leo
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Everett | boar-strong (from Everard) | #77 | 20,465 | 2010s |
| Ellis | from Elis, a medieval form of Elijah | #243 | 6,029 | 2010s |
| Theodore | gift of God | #4 | 56,941 | 2020s |
| Felix | happy, lucky | #175 | 9,986 | 2010s |
| Emmett | little Emma (probably) | #121 | 16,023 | 2010s |
| Henry | home + ruler (Germanic) | #5 | 57,254 | 1920s |
| Harvey | iron + blazing (Breton) | #251 | 5,385 | 1920s |
| Jack | #15 | 44,439 | 1920s | |
| Walter | ruler of the army | #252 | 6,485 | 1920s |
| Max | greatest (short form of Maximilian) | #180 | 11,155 | 2010s |
| Arthur | #87 | 15,181 | 1920s |
Leo's era
Leo ranked #19 for boys in 2025, against #91 in 2015. Its best year was 2023, at #18. 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, Leo included.
Girls: Elizabeth, Maria, Cecilia, Julia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Leo
These names follow Leo's curve too, but we left them out above because they share a first letter or an ending with Leo. 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 Leo's since 1880, and its recent number of babies is within about twelve times Leo's, so the names are in the same league. Names starting with the same letter as Leo or with the same ending are left out, so the names go together without matching. Spellings of Leo itself are excluded.