Count: 0 — No authenticated Irish girl names begin with the letter X. Authoritative sources on Irish names (for example Ó Corráin, Foras na Gaeilge and Irish civil registries) show no historically attested female given names of clear Irish/Gaelic origin that start with X. Note that X is rare in Irish orthography and appears mainly in modern loanwords and anglicised imports, so traditional Gaelic name lists do not include it.

Accept that the absence has clear linguistic and historical reasons. The sound represented by X (/ks/) is not native to Old or Modern Irish and the Gaelic alphabet and naming traditions did not produce native names beginning with that letter. Irish name dictionaries, medieval name lists, and national birth registers therefore list zero authentic entries. Expect any X‑starting names used in Ireland today (for example Xanthe, Xena, Xiomara) to be borrowings from Greek, Latin, Spanish or modern popular culture rather than Irish‑origin names.

Consider related searches and alternatives that will produce useful results. Seek Irish girl names that begin with S or C (many of which produce the “sh” or soft sounds English speakers sometimes associate with X), or look for anglicised Irish forms and mythological names if you want Gaelic flavor. Consult Ó Corráin, Foras na Gaeilge and national name registers when you require verified origin, pronunciation and meaning.