Meaning and history
Niamh is an Irish name meaning “bright” and, in Irish legend, was the daughter of the sea god Manannán mac Lir who fell in love with the poet Oisín, son of Fionn mac Cumhaill. It has been used as a given name for people only since the early 20th century.
In 2025, 43 babies were recorded with the name Niamh, ranking #3,517 among girls.