How to say it
CAL · la · han
ˈkæl.ə.hæn
Masculine
Callahan
Bright-headed
What it means
Anglicized Irish surname Ó Ceallacháin ('descendant of Ceallachán,' a personal name from ceallach 'bright-headed' or 'strife'). Harry Callahan (Clint Eastwood, Dirty Harry, 1971) is the dominant English-language anchor.
Callahan is an anglicization of the Irish surname Ó Ceallacháin, meaning 'descendant of Ceallachán,' a personal name from the Old Irish ceallach ('bright-headed' in one reading, 'strife, contention' in another). The name was particularly associated with the kings of Munster in early medieval Ireland. Harry Callahan ('Dirty Harry' Callahan, Clint Eastwood, 1971 onward) is the dominant English-language pop-culture anchor; Tommy Boy (Chris Farley's character Tommy Callahan, 1995) is the comic counterweight. As a US first name Callahan is modern: rare before 2010, climbing since. It entered the US top 1000 in 2018. Common short: Cal.
How to spell Callahan
The standard spelling is Callahan. Common variants include Callaghan, Callahane, but Callahan is the most widely used form.
Popularity over time
peaked at #227 in 2025, currently #227 in 2025.
Source: U.S. Social Security Administration, names given to at least 5 babies in a year, 1880–2025. Reviewed July 2026. See where the names are moving
Heads-up notes
- Pop culture
Harry Callahan (Dirty Harry, 1971) and Tommy Callahan (Tommy Boy, 1995) anchor the masculine cultural feel; the first-name use is mostly post-2010.
Who's worn it
Historical figures, characters, and public faces who share the name. The cultural surface, for whatever weight you want to give it.
- Harry Callahan Clint Eastwood's character in the Dirty Harry series, 1971 onward
Spelling variants
- Callaghan
- Callahane
Names with the same feeling
See Callahan from another angle
By meaning
By style
Common questions
- What does the name Callahan mean?
- Anglicized Irish surname Ó Ceallacháin ('descendant of Ceallachán,' a personal name from ceallach 'bright-headed' or 'strife'). Harry Callahan (Clint Eastwood, Dirty Harry, 1971) is the dominant English-language anchor.
- What does Callahan mean in Irish?
- In Irish, Callahan means "Bright-headed." Callahan is an anglicization of the Irish surname Ó Ceallacháin, meaning 'descendant of Ceallachán,' a personal name from the Old Irish ceallach ('bright-headed' in one reading, 'strife, contention' in another). The name was particularly associated with the kings of Munster in early medieval Ireland. Harry Callahan ('Dirty Harry' Callahan, Clint Eastwood, 1971 onward) is the dominant English-language pop-culture anchor; Tommy Boy (Chris Farley's character Tommy Callahan, 1995) is the comic counterweight. As a US first name Callahan is modern: rare before 2010, climbing since. It entered the US top 1000 in 2018. Common short: Cal.
- How do you pronounce Callahan?
- Callahan is pronounced ˈkæl.ə.hæn. Say it as CAL-la-han, with the stress on the "cal" syllable.
- How do you spell Callahan?
- The standard spelling is Callahan. Common spelling variants include Callaghan, Callahane.
- Is Callahan a boy or girl name?
- Callahan is traditionally a masculine name.
- How popular is the name Callahan?
- Callahan ranked #227 in the U.S. in 2025, according to Social Security Administration data.