James in Irish is Seamus, pronounced SHAY-muss.
No. 4 for boys in Ireland in 2025, with 359 baby boys.
More about JamesIrish Names Starting with J
2 Irish names beginning with J for boys, with what each one means and how to say it.
Updated October 2026
Irish boy names starting with J
Jarlath
pronounced JAR-lathSt. Jarlath (born c. 550 AD) was noted for his piety and his ability as a teacher. In old age he decided to found a monastery where he could end his days.
No. 829 for boys in Ireland in 2025, with 3 baby boys.
More about JarlathThere are 2 Irish boy names starting with J here. The ones readers look up most are James and Jarlath.