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Killian

Boy · Irish · Medium name

Meaning
Little church or bright-headed

Meaning varies between reference sources.

Pronunciation
KIL-ee-an
Origin
Irish

Derived from the Irish Gaelic name Cillian, likely from 'cill' (church) or 'ceallach' (war/strife).

Popularity
Uncommon in United Kingdom (2025)

Popularity: Lucky Stork Stage 1 Expansion, 2025

Classic

Languages in use: Irish

Commonly used in: Ireland

Similar names

Matched on shared origin, language, or verified meaning themes. Spelling similarity alone is not treated as a linguistic relationship.

Kelly

KEL-ee

Gender-neutral · Irish

Meaning: Bright-headed, church, strife

Full profile

Cillian

KIL-ee-an

Boy · Irish

Meaning: Little church; warlike

Full profile

Ruairi

ROO-ah-ree

Gender-neutral · Irish

Meaning: Red king

Full profile

Sources for this record

Lucky Stork Stage 1 Expansion, 5,000 New Names and Gender Dataset (2025). Last verified 2026-08-29.

How Lucky Stork verifies name data →