Mary Byrne may refer to: Mary Byrne (mayor) (1917–2004), mayor of Galway Mary Byrne (singer) (born 1959), Irish singer, 2010 The X Factor UK contestant Mary Ann Byrne (1854–1894), Irish nationalist Mary Elizabeth Byrne (1880–1931), Irish author and linguist Mary Freeman Byrne (1886–1961), American author Mary Gregg Byrne (born 1951), American portraitist, illustrator, and landscape artist
Mary Byrne (witness) (1850–1936), Irish woman considered to be the chief witness of the apparition at Knock, County Mayo Mary Martha Byrne (born 1969), American actress Mary Rose Byrne (born 1979), Australian actress Mary Green (painter) (1766–1845), née Byrne, British painter
See also Mary Burns (disambiguation) Byrne (surname)