Three Letter Boy Names
Updated Thu Feb 05 2026
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Three letter boy names are led by Kai, one of the sleek international male names in this fashionable category.
Along with Kai, other baby boy names with three letters in the US Top 300 include Eli, Ian, Leo, Max, Jax, and Ace.
Many of the most classic nicknames are three letter male names: Bob, Jim, Tom, Tim, Joe, and Sam, for instance.
Unique three letter names for boys on our recommended list include Art, Asa, Cal, Fox, Lev, Mac, Pax, Rex, Sem, Van, and Wim.
Take a peek at our full list of three letter names for boys below., ordered by their current popularity on Nameberry.
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- Kit
Origin:
English, diminutive of ChristopherMeaning:
"bearer of Christ"Description:
Actor Kit Harington, aka the dreamy Jon Snow on Game of Thrones, has given this nickname-name new style and appeal for boys. Actress Jodie Foster used it for her son back in the 2000s, while actor Kit Connor of Heartstopper fame may have introduced it to a wider audience.
- Leo
Origin:
LatinMeaning:
"lion"Description:
Leo is a strong-yet-friendly name that was common among the Romans, used for fourteen popes, and is now at its highest point ever in the US thanks in part to Leonardo "Leo" DiCaprio.
- 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.
- Max
Origin:
English and German diminutive of Maximilian or MaxwellMeaning:
"greatest"Description:
Max was derived from Maximilian, a Latin name that originated from the Roman family name Maximus. The character name Max in the children's classic Where the Wild Things Are had an impact on baby namers. Max is a widely used name internationally.
- Ira
Origin:
Hebrew, SanskritMeaning:
"watchful one; wind"Description:
Succinct and sharp, Ira is one of the shortest Old Testament names, belonging to one of King David's thirty 'mighty warriors.' It was widely used in the US from the 1880s to the early 1930s (it was Number 57 on the Social Security list in 1881), but fell off completely in 1993, only to return in 2016. Currently, it is in the latter half of the US Top 1000, given to around 260 boys each year.
- Asa
Origin:
Hebrew; JapaneseMeaning:
"healer; born in the morning"Description:
A short but strong biblical name with multicultural appeal, Asa is enjoying new visibility thanks to hot young actor Asa Butterfield of Hugo fame.
- Koa
Origin:
HawaiianMeaning:
"warrior; flowing tree native to Hawaii"Description:
The international popularity of Noah has led to some parents searching for alternatives and the rhyming Koa is now attracting more attention than ever. With its cool K initial and summery, nature-inspired feel, this punchy three letter name has risen more than 600 places since it entered the US charts in 2017.
- Ari
Origin:
Diminutive of Ariel, HebrewMeaning:
"lion of God"Description:
Ari, the short form of Ariel (or any other Ari- beginning name, such as Aristotle) stands up better as a boys’ name than its progenitor does. It is also short for Aristotle, as in Onassis, and is a prominent character on TV's Entourage -- the uberagent Ari Gold.
- Ian
Origin:
Scottish version of JohnMeaning:
"God is gracious"Description:
Ian is Scottish form of John, derived from the Hebrew name Yohanan. It is an Anglicization of the Scottish Gaelic Iain, which is also a viable spelling. Ian was introduced to Americans by Ian Fleming, creator of James Bond.
- Ivo
Origin:
Germanic, SlavicMeaning:
"yew wood, archer; God is gracious"Description:
Succinct, stylish, and catchy, Ivo has the energetic impact of other names ending in -o. It is a multicultural choice with two distinct origins, and, as such, is familiar across a variety of countries, ranging from the Netherlands to Brazil, from Portugal to Czechia.
- Eli
Origin:
HebrewMeaning:
"ascended, uplifted, high"Description:
With its sharp, succinct sounds and cool, laidback style, Eli is a popular choice among parents today. Compact and punchy, it is a Biblical name with plenty of charm.
- Gus
Origin:
Diminutive of Augustus, Angus, Gustave, Augustin, Augusten, Augustine, AugustDescription:
Gus is a homey grandpa nickname name that can work as a short form for any of the above or stand on its own as a cutting-edge replacement for Max and Jake--though it was off the Top 1000 from 1978 until 2016, when it squeaked in at Number 999.
- Ren
Origin:
Japanese, LatinMeaning:
"water lily, lotus, romantic love, move forward; reborn"Description:
A very popular unisex name in Japan, Ren is a concise and versatile choice that could work across multiple languages. A rising star in England and Wales where it ranks in the Top 1000, it is also on the rise in the US where it was give to nearly 90 girls and 200 boys in a recent year.
- Guy
Origin:
FrenchMeaning:
"wood"Description:
The patron saint of comedians and dancers (also known as St Vitus) has a name that is both the ultimate everyman, and has a hint of British aristocracy. In the States, Guy was most popular in the 1950s. Now he hovers steadily below the Top 1000, in the sweet spot of familiar but not overused. With the meteoric rise of Kai, Guy may have potential with parents looking for a more classic name with a similar sound.
- Rio
Origin:
Spanish, Portuguese, JapaneseMeaning:
"river; place of the cherry blossoms"Description:
Rio is a reductive ranchero place-name with an attractive Tex-Mex lilt. No Doubt's Tom Dumont has a son named Rio Atticus.
- Rex
Origin:
LatinMeaning:
"king"Description:
Now that many dogs are named Max, it's safe to use this sleek, solid, regal name again for your child. And with the charm of its final x, its regal meaning, and its offbeat simplicity, Rex is definitely one to consider.
- Jax
Origin:
Modern invented name, EnglishMeaning:
"God is Gracious"Description:
With its cool -X ending, Jax is an update on the classic nickname Jack, likely inspired by the rise of Jackson. It garnered attention in the US thanks to the game, Mortal Kombat II back in the '90s, and was pushed up the charts when it was used in the show Sons of Anarchy, in which Jackson "Jax" Teller is the central character.
- Ray
Origin:
Diminutive of Raymond, word name, EnglishMeaning:
"wise protector; beam of light"Description:
Simple, short, and cool, Ray gives off retro vibes thanks to its 20th century popularity, and its links to jazzy Ray Charles and Ray-Ban sunglasses. A popular middle name for boys, it is well established as a given name too.
- Fox
Origin:
Animal nameDescription:
Fox is one animal name backed by a longish tradition, and then popularized via the lead character Fox Mulder on X Files. Fox is simple, sleek, and a little bit wild, and could make an interesting middle name.
- Cal
Origin:
Diminutive of names including CalMeaning:
"dog; the whole of; dove; bald; war-strife; beautiful"Description:
Cal is a nickname style name that feels as friendly and calm as it does cool and breezy. While its longer forms have proved more popular over the years, Cal as a stand alone has dropped on and off of the US Top 1000 since the 1880s.
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