This list includes 2 Irish girl names that start with U, from “Uathach” to “Una”. They range from a mythic Ulster figure to a familiar anglicised form, useful for parents, writers, and genealogists.

Irish girl names that start with U are female names used in Ireland and rooted in Gaelic tradition. Some come from old tales, while others are anglicised forms used for generations.

Below you’ll find the table with Name, Pronunciation, Meaning, and Origin.

Name: The traditional and anglicised form of the given name, so you can quickly identify preferred spellings.

Pronunciation: A concise phonetic guide to help you say each name correctly when speaking or sharing aloud.

Meaning: A brief explanation of the name’s sense or origin, helping you understand cultural or linguistic significance.

Origin: Notes on the name’s Gaelic roots or historical usage to help you understand cultural and regional context.

Irish girl names that start with U

NameIrish Spelling/Variant(s)PronunciationMeaning
UnaÚna, Oonagh, OonaOO-nahPossibly “lamb” (from Old Irish uan); origin disputed
UathachUathachOO-ah-hakhfearsome, dreadful (from uath “fear”)

Descriptions

Una
One of the best-known Irish female names, attested in medieval annals and sagas; popular today and listed by Ó Corráin and Foras na Gaeilge.
Uathach
A mythological female name attested in the Ulster Cycle (Irish mythology); derived from uath “fear”; appears in medieval tale traditions (see Celtic myth sources).
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