Maire Brennan (born 4 August 1952, Dublin, Ireland) is an Irish vocalist active mainly in the field of celtic, folk and new age music. Best known as the lead singer of Clannad, she now records solo under a phonetic spelling of her name, Moya Brennan.

Her first four solo albums were released under the name 'Maire Brennan', this being an anglicised version of her given birth name 'Máire' and her Gaelic family name, 'Ní Bhraonáin'. Since 2002, she has promoted herself as Moya Brennan, a spelling closely resembling the phonetic pronunciation of her name, and in 2009 she legally changed her name by deed poll (to Moya Brennan). Her fifth solo album (under the name Moya Brennan), 'Two Horizons' was released in 2003, and received a Grammy nomination in the 'Best New Age Album' category.

Daughter of Leo Brennan and Máire 'Baba' Duggan. Sister of Leon Brennan, Ciarán Brennan, Deidre Brennan, Pól Brennan, Olive Brennan, Eithne (Enya), Bartley and Brídín Brennan. Niece of Padraig Duggan and Noel Duggan.