Callum is a gentle, charming name of Scottish origin, that is a popular choice across the UK. In the US, it was a rare option until the late 2000s, however, since 2017 it's been rising up the ranks. Complete with easy, breezy and cool nickname Cal, it climbed more than 60 places in the US in 2024, placing it just outside the Top 150.

With its friendly, sensitive, and approachable feel, Cameron is a 90’s favorite that remains popular today. It has a pleasing balance of soft and strong sounds, and holds unisex appeal, thanks to Cameron Diaz. Still, eight times more boys than girls are named Cameron in the US.

Thanks to its dashing Anglo-Irish image — due partly to Colins Firth and Farrell — and its C-initialed two-syllable sound, Colin and its cousin Collin have enjoyed a long run of popularity, reaching as high as Number 84 in 2004.

Carson is one of the most long-running popular androgynous baby names, with a dash of the Wild West via the legendary Missouri frontiersman Kit Carson. Dating back to when it was the name of Nancy Drew's Dad, Carson is still steadily in the Top 200 baby names.

Collins is a surname name that has made the girls' Top 1000 thanks to its use for the daughter of the real-life Blind Side heroine. As of 2022, Collins climbed into the US Top 300. This derivation of the Greek Nicholas—which means "people of victory"—or the Irish and Scottish Colin—which may itself be a Nicholas derivation or an Anglicization of the word for pup—has a stylish feel made more so by that final s.

Even though in the past Clyde may have been identified as half of the infamous outlaw duo with partner Bonnie Parker—especially after the 1967 movie in which he was played by Warren Beatty—Clyde has always had an element of jazzy cool that could overcome all the rest.

Camden is a surprise hit, probably as a result of some star baby cred: it has been chosen by no less than four celebrity parents since 2012. Gentle but not flimsy, Camden could be an updated spin on Cameron, Callum, or Caden.

The seventh most common surname in Scotland, for a time associated only with soup company and the Andy Warhol's iconic painting, Campbell is once again being considered as an accessible but rarer alternative to Cameron in the US. Traditionally given as a masculine first name in the 20th-century — and still used as such in the UK — it is now a unisex choice in the States. In fact, 2025 saw it appear as one of the fastest rising names across the board, climbing 338 places for girls and 159 for boys.

Cameron was once a rising star for boys only, but Cameron Diaz almost single-handedly transported it into the unisex camp back in the 80s.Though there are still eight times as many boy babies named Cameron as girls, it is currently in the US Top 600, where it is joined by Camryn and Kamyn.

Craig is a single-syllable baby-boomer name, still common in its native Scotland, but most modern Americans would prefer something like Kyle.

Thanks to its dashing British image and c-initialed two-syllable sound, Colin/Collin has enjoyed a long run of popularity.

One of several Anglicized forms of Caolán, this spelling is borrowed from the Old Irish root, cáel.

Caoimhe, pronounced (more properly) kwee-va or kee-va, is a pretty and distinctive Gaelic name but one that could well lead to no end of confusion outside the Irish community. Even in its native habitat, it is sometimes spelled Keeva.

The seventh most popular surname in Scotland and an alternative to Camryn, Cameron, and Camila, Campbell is a cool, contemporary unisex choice — a no-frills sort of name that nevertheless offers feminine nicknames like Cammie and Belle. It was one of the fastest rising choices in 2025, rising 338 places up the charts for girls, and 159 for boys.

Though Collins makes the Top 300 for girls, it sounds strong and handsome for boys too, kind of like the newly-stylish Brooks. The final s updates it from the 80s-ish Colin or the Twilightish Cullen. Might make an innovative honorific for a grandpa Nick.

Most parents would prefer to leave the car part parked in the garage.

Very popular surname choice — it's in the Boys' Top 100 — beginning to catch on for girls. First female association: novelist Carson McCullers.

In Scotland, a cairn is a heap of stones placed as a memorial or to support a beacon. This gives the name a rugged, timeless quality that is very appealing at present.

Both Caitriona and Catriona are commonly heard in Scotland and Ireland. The name was brought to Ireland by the Anglo-Normans, and is the source of nicknames Cait, Caitin, Caitlin and Triona. Actress Caitrona Balfe has gained recognition for her role on Outlander. Pronunciation is like Katrina.

Cameron is still more popular as a boy's name than a girls and this simple, snappy short form works well for either sex.