Sibling names for Mack
Names that sound like they belong in the same family as Mack usually share its era. These sister and brother names rose and fell on a similar curve to Mack, whose busiest decade was the 1940s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Mack
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Winnie | pet form of Winifred (and others) | #475 | 2,613 | 1920s |
| Leila | night | #259 | 6,293 | 2010s |
| Alma | nourishing, kind | #449 | 3,285 | 1920s |
| Eva | life, living (form of Eve) | #134 | 12,288 | 1920s |
| Celia | heavenly (Latin Caelia) | #774 | 1,747 | 1910s |
| Vida | #1,218 | 1,202 | 1920s | |
| Essie | pet form of Esther | #3,306 | 255 | 1920s |
| Kathryn | #729 | 2,168 | 1950s |
Brother names for Mack
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Archie | pet form of Archibald ('genuine, bold') | #301 | 4,763 | 1920s |
| Percy | from Percy-en-Auge, Normandy | #1,279 | 622 | 1920s |
| Ollie | high, exalted (Arabic); also short for Alison | #1,058 | 1,029 | 1920s |
| Sam | #647 | 2,086 | 1920s | |
| Emile | #2,098 | 374 | 1920s | |
| Luther | "people" + "army" | #1,464 | 603 | 1920s |
| Lucius | #1,129 | 773 | 2010s | |
| Clarence | of Clare (a ducal title) | #1,500 | 608 | 1920s |
Mack's era
Mack ranked #463 for boys in 2025, against #662 in 2015. Its best year was 1900, at #96. 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, Mack included.
Girls: Elizabeth, Lydia, Cecilia, Julia, Nina, Carmen. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Mack
These names follow Mack's curve too, but we left them out above because they share a first letter or an ending with Mack. Some parents like that echo; if you do, start here.
- Mazie same first letter as Mack
How these were chosen
Each suggestion's share of US babies has followed a curve close to Mack's since 1880, and its recent number of babies is within about twelve times Mack's, so the names are in the same league. Names starting with the same letter as Mack or with the same ending are left out, so the names go together without matching. Spellings of Mack itself are excluded.