Callahan

Where Callahan comes from

From Irish Ó Ceallacháin, from Ceallachán, diminutive of the given name Ceallach. Doublet of Kelly and Kellogg.
— Wiktionary's entry for Callahan
  • 3 syllables
Callahan through the years
  1. 1983
    First appearance
    #6,238 among boys with 5 babies, the first year at least five got the name.
  2. 1995
    Mostly boys from here
    Until now more girls than boys got the name. From this year on, more boys have.
  3. 2025
    Peak, #227
    1,566 babies named Callahan, the most in any year.
In the dictionary
  • A male given name transferred from the surname.
Namesakes

No widely recognized namesakes for Callahan in Wikidata.

Sources: the origin note and dictionary entry are quoted from Wiktionary (CC BY-SA 4.0); the namesakes come from Wikidata (CC0); the milestones are worked out from the SSA record.