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Home › Baby Names Directory › Callahan

Callahan

♀ Girl

Pronounced KAL-uh-han /ˈkæl.ə.hæn/High

Meaning: lover of churches, devoted to the churchMedium

In 30 seconds: Callahan is an Irish surname used as a given name meaning lover of churches. Transferred from a distinguished Gaelic clan name, it has a strong, rhythmic sound for a modern girl's name.
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Origin HighIrish
Meaninglover of churches, devoted to the church
U.S. rank (2025)#1748 ↗ Rising
2025 U.S. births116 girls (0.01% of U.S. girls)
Peak year2025
Total births (all-time)≈ 1,000

Popularity in the U.S. · SSA data

peak 202519882025

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Callahan is the anglicized form of the Old Irish Ceallachán, a patronymic surname derived from ceallach meaning loving churches or devotion to the church. The MacCallahan and O'Callahan clans were prominent in Munster, Ireland.

Callahan began appearing as a given name in the United States in the late 20th century, following the surname-as-first-name trend. Its strong, three-syllable cadence makes it appealing for girls, with the nickname Calla giving it a floral feminine quality.

Did you know? Callahan is an anglicization of the ancient Irish clan name Ceallachán, borne by Callachán of Munster (d. 954), a King of Munster who warred against the Vikings.
Overall data confidence 80%
MacLysaght, The Surnames of Ireland — reference for CallahanBehind the Name: Callahan — name etymology reference

Variations

CallahannCallaghanCallie

Nicknames

CallaCalCallie

Famous Bearers

  • ★Cellachán Caisil (c. 905–954)
    King of Munster of the Eóganachta dynasty and namesake of the Ó Ceallacháin (Callahan) clan; fought Norse forces in 10th-century Ireland.

If you like Callahan…

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Reagan— Irish surname increasingly used for girls
Calla— shares the Calla nickname and floral feminine quality

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Frequently Asked

What does Callahan mean?

Callahan means lover of churches or devotee of the church, from the Old Irish Ceallachán.

How do you pronounce Callahan?

Callahan is pronounced KAL-uh-han (/ˈkæl.ə.hæn/), with three syllables.

Is Callahan a girl's name?

Callahan is traditionally an Irish surname now used for both boys and girls as a given name, with increasing use for girls.

How popular is the name Callahan?

Callahan is an uncommon given name that has grown since the late 20th century as Irish surname names became fashionable.

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