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Home › Baby Names Directory › Tiernan

Tiernan

♂ Boy

Pronounced TEER-nən /ˈtɪr.nən/High

Meaning: From Irish Tighearnán — from tighearna, 'lord' — 'little lord, kingly'High

In 30 seconds: A little lord: Tiernan is the Irish 'kingly one' — noble, lyrical, and clan-strong. Celtic grandeur in a melodic name.
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Origin HighIrish
MeaningFrom Irish Tighearnán — from tighearna, 'lord' — 'little lord, kingly'
U.S. rank (2025)#3840 ↗ Rising
2025 U.S. births29 boys (0.00% of U.S. boys)
Peak year2007
Total births (all-time)≈ 1,481

Popularity in the U.S. · SSA data

peak 200719852025

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

Tiernan comes from Irish Tighearnán — from tighearna, 'lord' — 'little lord, kingly'. Borne by medieval Irish kings (the O'Rourkes of Breifne), it's a noble, lyrical Celtic name.

It registers thinly in records. Rare, little-lord at the root, and noble.

Did you know? Tiernan comes from Irish tighearna, 'lord' — 'little lord' — borne by kings of Breifne; it has a noble, kingly ring.
Overall data confidence 82%
Behind the Name — Tiernan — etymology

Variations

TighearnánTiarnanTiernen

Nicknames

Tiern

Famous Bearers

  • Famous bearers coming soon.

If you like Tiernan…

Kiernan— a fellow Irish -an surname-name
Ronan— a companion Irish name
Declan— another noble Irish name
Duncan— lands in the same popularity range
Teegan— a fellow Irish choice

Explore names like Tiernan

By themeirishroyal
By meaningRoyal / Noble

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Frequently Asked

What does the name Tiernan mean?

Tiernan is Irish for 'little lord, kingly', from tighearna, 'lord'.

How do you pronounce Tiernan?

It's said TEER-nən /ˈtɪr.nən/ — two syllables, stress on the first.

Is Tiernan a boy or girl name?

Tiernan is a boy's name.

How popular is Tiernan?

Tiernan is a rare name in the U.S.

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