Mary Davidson

Mary Davidson may refer to:
 * Mary Davidson (Irish politician) (1902–1986), member of Seanad Éireann
 * Mary Davidson (artist) (1865–1951), Scottish artist
 * Mary Davidson (editor) (1872–1941), American newspaper editor and member of the Illinois House of Representatives
 * Mary Ann Davidson, chief security officer of Oracle Corporation
 * Mary Ann Maitland (1839–1919), née Davidson, Scottish-born Canadian author
 * Mary Wallace Davidson (1935–2012), American music librarian