Irish boy name
Tiarnán Name Meaning, Origin & Pronunciation
Tiarnán means little lord. From the Irish tiarna, lord, with a diminutive ending
Tiarnán is a traditional Irish name from tiarna, lord, with an affectionate ending, so little lord. It is also written Tighearnán and has a long history in medieval Ireland. The anglicised spelling Tiernan is common and helps those unfamiliar with the Irish form. Tiarnán has seen a clear rise in recent years, as parents seek authentic Gaelic names for boys. It has a firm, rhythmic sound that fits well with other Irish names such as Cian and Cillian, and it pairs easily with most surnames.
Variants of Tiarnán
TiernanTiarnanTierneyTighearnán
Tiarnán popularity: Ireland vs the US
In 2025 Tiarnán ranked #206 in Ireland (23 babies) and #13,177 in the US (5 babies). It is far more popular in Ireland than in America.
Ireland (boys)United States (boys)
Rank among babies of the same sex, 1 = most popular (log scale). Ranks below #10,000 sit on the bottom edge. Gaps mean fewer than 3 Irish or 5 US babies that year.
Data: US Social Security Administration (public domain) and Central Statistics Office, Ireland (CC BY 4.0). Irish accented spellings (such as Síle) are only recorded from 2018, so earlier years combine spellings.
Frequently asked questions
What does the name Tiarnán mean?
Tiarnán means "little lord". From the Irish tiarna, lord, with a diminutive ending.
How do you pronounce Tiarnán?
Tiarnán is pronounced TEER-nawn.
What is the origin of Tiarnán?
Tiarnán is of Irish origin. From the Irish tiarna, lord, with a diminutive ending.