boy's name
Callen
KAL-en (English)
- Origin Irish
- Gender Boy
- Syllables 2
- Letters 6
- Popularity Top 1000 (US)
- Births on record 11,373
the United States
#517
2025 births
Callen is a boy's name of Irish origin. House of Names derives it from Ó Cathaláin, descendant of Cathalán, from a word for "battle," and The Bump gives "powerful in battle." BabyNames.com instead gives "slender," which belongs to the separate Irish name Caolán.
- Callen is a name of Irish origin.
- Peaked in 2023, when 721 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 5,544 babies in the United States is given this name.
- First appears in US birth records in 1954.
- 2 syllables, with the stress on syllable 1.
Callen Over Time
Births per decade in the United States, 1950s to 2020s. The striped bar is the 2020s, which so far covers 2020 to 2025.
Show the numbers
| Decade | Births |
|---|---|
| 1950s | 42 |
| 1960s | 37 |
| 1970s | 11 |
| 1980s | 187 |
| 1990s | 370 |
| 2000s | 620 |
| 2010s | 4,924 |
| 2020s (to 2025) | 3,914 |
What Callen Means
Callen is usually read as powerful in battle or strong in battle. The other reading, slender, comes from a similar-sounding name, so the meaning depends on which Irish root a family has in mind.
Where Callen Comes From
Irish cath, battle, gave Cathal, and the diminutive Cathalán produced Ó Cathaláin, a surname anglicized as Callen and Callan. House of Names places it early in County Roscommon. Separately, Irish Caolán, from caol, slender, has also been written as Callan. Those two origins overlap in English spelling, which explains the conflicting glosses. As a first name it's modern, helped by the fashion for Callum and Colin, and it's used in Scotland, Canada and the United States. Fluffy Ducks gives battle or rock, repeating part of the same story.
Callen in Use
American television viewers know G. Callen, played by Chris O'Donnell in NCIS: Los Angeles. Cal is the obvious short form.
How Popular Is Callen?
In 2025, Callen was given to 598 babies in the United States, ranking #517 that year. It ranks among the top 1,000 names in the United States.
Where Callen Is Used
US figures omit any name given to fewer than five babies in a year, so the rarest names are absent from the source rather than absent from use. Data & sources.
Names That Peaked Alongside Callen
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents Who Like Callen Also Like
Names whose popularity has risen and fallen in step with Callen over the last century — the same taste, a different name.
How to Say Callen
- English KAL-en
1 nickname for Callen
Each one is a name in its own right — the figure underneath is how it is doing today, so you can see which short forms are rising and which have faded.
Callen in Other Languages
The same name as it is spelled elsewhere — not shortenings, and not different names that merely sound alike. Each one has its own record here.
- Other forms
- Forms we hold no single language for — some are used across several, some are simply spelled differently.
- Callan
Sibling Names for Callen
Names from the same era that do not rhyme or share an initial with Callen — the two things that make a sibling set grate.
Common Questions About Callen
What does the name Callen mean?
It's usually read as powerful in battle.
Why do sources disagree about Callen?
Two separate Irish roots have merged in this spelling.
How do you pronounce Callen?
KAL-en.
How popular is the name Callen?
In 2025, Callen was given to 598 babies in the United States, ranking #517 that year. It ranks among the top 1,000 names in the United States.
Is Callen a girl's or a boy's name?
Callen is given almost entirely to boys in birth records.
How many syllables are in Callen?
Callen has 2 syllables.
When was Callen most popular?
Callen peaked in 2023, when 721 babies were given the name. It has been rising over the past decade.
What are the nicknames for Callen?
Callen is usually shortened to Cal.
Is Callen a good name?
That is not something records can settle, but they can tell you what you would be choosing. Callen currently ranks #452 in the United States. It has been rising over the past decade. Everything else — how it sounds with your surname, who it reminds you of — is yours.