Count: 0 — No authentic Irish girl names begin with W. For parents, writers, genealogists and name‑enthusiasts searching for “Irish girl names that start with W,” authoritative Irish‑language sources (Ó Corráin, Foras na Gaeilge, Irish name registries and etymological dictionaries) return no entries that meet the criteria. Note that the letter W is not native to Gaelic orthography or historic Irish personal names; W appears only in later borrowings, anglicisations, or surnames, and the closest parallels come from other Celtic languages such as Welsh.

Understand that the absence is linguistic and historical. Old and Modern Irish did not use W as an initial letter, and the sounds that English represents with W are generally rendered in Irish by letter combinations (for example bh, mh or gu) or by different consonants entirely. Expect modern English names used in Ireland (Willow, Wendy, Winnie) to be borrowings, not authentic Gaelic names. Consult authoritative Irish name lists instead for genuine alternatives — look at Gaelic names beginning with Ú, F, B or M, or names whose spellings and pronunciations show the historical sound changes that produce similar sounds in English.