unisex name
Callaghan
KAL-uh-han (English)
- Origin Irish
- Gender Unisex
- Syllables 3
- Letters 9
- Popularity Uncommon
- Births on record 528
Callaghan is an Irish surname used as a first name, mainly for boys. It comes from Ó Ceallacháin, "descendant of Ceallachán," a personal name built on an Old Irish root read either as "strife" or as "church," and it recalls a tenth-century king of Munster.
- Callaghan is a name of Irish origin.
- Peaked in 2022, when 51 babies were given the name.
- It has been rising over the past decade.
- Today about 1 in 69,070 babies in the United States is given this name.
- First appears in US birth records in 1994.
- 3 syllables, with the stress on syllable 1.
Callaghan Over Time
Births per decade in the United States, 1990s to 2020s. The striped bar is the 2020s, which so far covers 2020 to 2025.
Show the numbers
| Decade | Births |
|---|---|
| 1990s | 43 |
| 2000s | 64 |
| 2010s | 100 |
| 2020s (to 2025) | 231 |
What Callaghan Means
Callaghan means descendant of Ceallachán. The personal name inside it has two competing readings: one treats it as strife or contention, and the other as lover of churches, from ceall, a church.
Where Callaghan Comes From
Callaghan is the English spelling of Ó Ceallacháin. The family claims descent from a tenth-century Munster king, Ceallachán, remembered for his wars with the Vikings of southern Ireland. Ceallachán itself is a diminutive of Ceallach, an early Irish personal name. Scholars and surname dictionaries split over that root: some connect it with a word for strife, while others link it to ceall, a church. Callahan became the usual spelling among Irish families in America, while Callaghan and O'Callaghan remain standard in Ireland.
Callaghan in Use
The surname's use as a first name fits the wider American habit of turning Irish family names into given names, as with Kennedy and Sullivan. Cal is the natural short form.
How Popular Is Callaghan?
In 2025, Callaghan was given to 48 babies in the United States. It is used consistently but remains uncommon.
Where Callaghan 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 Callaghan
These names rose and fell in the same era, which is why they tend to sound like they belong together.
Parents Who Like Callaghan Also Like
Names whose popularity has risen and fallen in step with Callaghan over the last century — the same taste, a different name.
How to Say Callaghan
- English KAL-uh-han
1 nickname for Callaghan
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.
Callaghan 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.
- Callahan
Sibling Names for Callaghan
Names from the same era that do not rhyme or share an initial with Callaghan — the two things that make a sibling set grate.
Common Questions About Callaghan
What does the name Callaghan mean?
Descendant of Ceallachán, a name read as either strife or lover of churches.
How do you pronounce Callaghan?
KAL-uh-han. The g is silent.
What is the difference between Callaghan and Callahan?
They're one name. Callahan is the common Irish-American spelling.
How popular is the name Callaghan?
In 2025, Callaghan was given to 48 babies in the United States. It is used consistently but remains uncommon.
Is Callaghan a girl's or a boy's name?
Callaghan is used for both girls and boys. About 12% of recorded births with this name are girls.
How many syllables are in Callaghan?
Callaghan has 3 syllables.
When was Callaghan most popular?
Callaghan peaked in 2022, when 51 babies were given the name. It has been rising over the past decade.
What are the nicknames for Callaghan?
Callaghan is usually shortened to Cal.
Is Callaghan a good name?
That is not something records can settle, but they can tell you what you would be choosing. Callaghan currently ranks #2,415 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.