Callahan
From an Irish surname meaning "warrior" or "bright-headed", derived from Ó Ceallacháin, from the given name Cellachán.
Meaning and origin
Callahan is an English given name taken from the Irish surname Ó Ceallacháin, which derives from an early Irish personal name.
How to pronounce Callahan
| English (US) | KAL-uh-han /ˈkæləhæn/ |
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About this entry
Drafted with the help of an AI model, then checked by a person. Last checked on 16 September 2026.
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