[ 2 syll. niam(h), ni-a-mh ] The baby girl name Niamh is also used as a boy name. It is pronounced NIY-AHV or NIY-V †. Niamh's language of origin is Celtic. It is predominantly used in English and Irish. It is derived literally from the word niamh which is of the meaning 'radiance, shine, beauty'. The first name was borne in Irish mythology by the daughter of the god of the sea; according to Ossianic legend she fell in love with Ossian, son of Finn MacCool.
Another variant of the name is the African, English, Swahili, and Welsh contracted form Nia.
Niamh is not commonly used as a baby girl name. It is not in the top 1000 names. In 2018, within the family of girl names directly related to Niamh, Nia was the most widely used.
† Pronunciation for Niamh: N as in "knee (N.IY)" ; IY as in "eat (IY.T)" ; AH as in "mud (M.AH.D)" ; V as in "vow (V.AW)"