Kallahan

Q: What does Kallahan mean?

Kallahan is a boys' name of Irish origin, spelling of Callahan; from the Irish surname Ó Ceallacháin. From the surname of the O'Callaghans, who claim descent from Ceallachán, a 10th-century king of Munster.

Gender: Boy
Say it: KAL-uh-han
Origin: Irish
US rank, 2025: #3,127 for boys

Kallahan is a boys' name of Irish origin. In 2025 it ranked 3,127th for boys in the US (38 babies).

What does Kallahan mean?

Irish: spelling of Callahan; from the Irish surname Ó Ceallacháin

From the surname of the O'Callaghans, who claim descent from Ceallachán, a 10th-century king of Munster.

Meaning borrowed from Callahan. More on Wiktionary.

Is Kallahan a girl's or a boy's name?

Kallahan is a boys' name. In 2025, it was given to 5 girls and 38 boys in the US.

How popular is Kallahan in the US?

Rank in 2025: 3,127th among boys
Babies in 2025: 38 about 1 in 45,000 boys
Five-year trend: Rising fast up 185% in five years
Same name in a class: under 1% chance among 15 boys

In 2025, 38 boys in the US were named Kallahan, making it the 3,127th most popular name for boys. Five years earlier, in 2020, it was 8,734th. It first appears in the records in 2017. 5 girls were also named Kallahan in 2025 (14,937th for girls).

2025 had the most boys named Kallahan of any year since it first appeared, in 2017.

Half of all the boys named Kallahan in the US since 1880 were born between 2021 and 2025, the years shaded on the chart below.

In 2025, 1,693 boys in the US were given Kallahan or a name that sounds the same. With every name's spellings counted this way, that ranks #232, up from #3,127 for this spelling alone.