Sarah Ann O'Neill (19 August 1919 –13 April 2012), was a well known and significant Irish traditional singer.

She was the eldest child of labourer Joe Hanna and his wife, Elizabeth (née Hughes).

Her first job was in a cafe in Belfast before she went into service as a domestic servant to a wealthy family in her home district.

[2][3] O'Neill was discovered when song collectors Seán Ó Baoill and Gerry Hicks were sent tapes of an evening of singing in one of the family homes in the 1950s.

O'Neill attended fleadhs and festivals and taught her music to a wide number of singers as well as learning from them.