Boy Names That Can Start with a C or a K
Updated Sat Oct 28 2023
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Many names for boys (and girls too) can start with either a C or a K. The C and K spellings have become basically interchangeable. Typically, the K spelling is the variation, although that is not always the case. Names such as Cai and Cale have spawned from Kai and Kale. In some cases, both spellings are equally legitimate, such as with Cillian and Killian, or Caspar and Kaspar.
Along with Kai and Killian, other boy names that can start with a C or a K in the US Top 1000 include Cairo and Kairo, Cash and Kash, Colton and Kolton, and Crew and Krew. Those in which both spellings are rare include Caius and Kaius, Cato and Kato.
The choice of C or K as an initial may reflect your feelings on name style, traditionality, and image. Here, a selection of boy names that work with either C or K as a first letter.
- Callum
Origin:
Scottish form of Columba, LatinMeaning:
"dove"Description:
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.
- Kai
Origin:
Hawaiian, Frisian, ChineseMeaning:
"sea; warrior; triumph"Description:
Kai is an internationally flexible name with many possible origins and meanings, growing in popularity in the US and a diverse range of European countries.
- Carl
Origin:
German variation of CharlesMeaning:
"free man"Description:
This no-nonsense German variation of Charles is strong and sturdy. A top choice throughout the 20th century, Carl is now verging on falling off the charts.
- Cillian
Origin:
IrishMeaning:
"war strife or church"Description:
Cillian is one of the native Irish names that, along with Aiden and Declan, is becoming an unlikely favorite in contemporary America. The Killian spelling has been more popular in the US, but Cillian's star is rising, perhaps thanks to Irish actor Cillian Murphy, star of Oppenheimer and Peaky Blinders.
- Kian
Origin:
Irish; PersianMeaning:
"ancient; king"Description:
A friendly Irish and Persian name chosen by Geena Davis for one of her twin boys, whose father is Iranian.
- Caleb
Origin:
HebrewMeaning:
"dog; whole heart"Description:
Caleb is an attractive Old Testament name that has been in the US Top 100 for nearly three decades now. Consistently popular but never too popular, Caleb feels more like a classic than a momentary trend.
- Casey
Origin:
IrishMeaning:
"brave in battle"Description:
Casey is a name with a big wide grin, Irish, friendly, and open, and associated with several American folk heroes--Casey Jones, the engine driver of the Cannonball Express who gave his life to save his passengers, and the legendary Casey at the Bat.
- Caius
Origin:
Variation of Gaius, LatinMeaning:
"rejoice"Description:
Caius is classical and serious but also has a simple, joyful quality. There was a third century pope named Caius, as well as an early Christian writer, several Shakespearean characters, and a Twilight vampire. We would pronounce the name to rhyme with eye-us though at Cambridge University in England, where it's the name of a college, it's pronounced keys.
- Calvin
Origin:
LatinMeaning:
"bald, hairless"Description:
Calvin is a slightly quirky but cozy name that has a fashion edge thanks to Calvin Klein. It has been steadily on the popularity list since records were kept, never lower than Number 250, peaking in the 1920s, the era of the Calvin (originally John Calvin ) Coolidge presidency.
- Cade
Origin:
EnglishMeaning:
"round, barrel; battle"Description:
Strong and modern, Cade shot up the popularity lists around the millennium—it was as high as Number 201 in 2001. Now, it has declined in popularity slightly, but nevertheless remains in the US Top 300, given to around 1200 babies each year. Combined with all the baby Kades, Cadens, Kaidens and Kaydens however, it might feel even more popular that it actually is.
- Cooper
Origin:
English occupational nameMeaning:
"barrel maker"Description:
The genial yet upscale and preppy Cooper was one of the first occupational last names to catch on -- and Cooper remains a pleasing option.
- Cameron
Origin:
ScottishMeaning:
"crooked nose"Description:
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.
- Christopher
Origin:
Greek and LatinMeaning:
"bearer of Christ"Description:
Christopher derived from the Greek Christophoros, which is composed of the elements Christos, referring to Christ, and phero, meaning "to bear."
- Killian
Origin:
IrishMeaning:
"war strife or church"Description:
Killian – aka Cillian – is a spirited yet resonant Gaelic name that was borne by several Irish saints and could make a distinctive replacement for the dated Kelly. Kylian is another spelling that's gaining traction, thanks to French soccer star Kylian Mbappé. Possible downsides: an unsavory first syllable and a connection to the trendy brew.
- Camden
Origin:
American and British place-name, ScottishMeaning:
"winding valley"Description:
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.
- Clement
Origin:
LatinMeaning:
"mild, merciful"Description:
Clement, the name of fourteen popes and several saints, has a pleasantly, positive, slightly antiquated feel, like the phrase "clement weather."
- Kaius
Origin:
Variation of Caius, LatinMeaning:
"rejoice"Description:
Kaius is a K-ization of the Latin Caius, the name of an ancient poet, introduced by style maven Rachel Zoe. More recently, it was used by Derek Jeter for his son.
- Carson
Origin:
English and Scottish surnameMeaning:
"son of the marsh dwellers"Description:
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.
- Cole
Origin:
EnglishMeaning:
"swarthy, coal black"Description:
Cole -- a short name that embodies a lot of richness and depth -- has long been associated with the great songwriter Cole Porter. It's quite popular in Scotland.
- Cruz
Origin:
SpanishMeaning:
"cross"Description:
For a single-syllable Latino surname, this new popular kid on the block packs a lot of energy and charm and is one of the most stylish Spanish names for boys in general use today. Victoria and David Beckham named their third son Cruz, following Brooklyn and Romeo, and it was also picked up on by tennis star Lleyton Hewitt for his son. Other parents may prize its Christian associations.
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