Baby Names of Ireland

Irish Boy Names Starting with I

2 Irish boy names beginning with I, with what each one means and how to say it.

Updated September 2026

There are 2 Irish boy names starting with I here. The ones readers look up most are Iollan and Iarlaith.

Irish boy names starting with I

Iarlaith

pronounced EER-la

Iarlaith is the Irish form of Jarlath, the name of the sixth-century saint who founded the monastic school of Tuam. Two syllables, stress on the first.

More about Iarlaith

Iollan

pronounced UL-an

Iollan means “one who worships a different god.” Two syllables, stress on the first.

More about Iollan

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