Mary Campbell

Mary Campbell may refer to:
 * Mary Campbell (colonial settler) (1747/8–1801), American colonial settler
 * Mary Katherine Campbell (1905–1990), two-time winner of the Miss America pageant
 * Mary Baine Campbell, poet and scholar
 * Mary Dranga Campbell (1867–1957), activist for the blind
 * Mary Schmidt Campbell (born 1947), dean at New York University
 * Mary Campbell (figure skater), American retired figure skater
 * Mary Campbell, Countess of Breadalbane and Holland, English noblewoman
 * Mary Winchester (Supernatural), née Mary Campbell, a character in the TV series Supernatural
 * Mary Edith Campbell, suffragist and social economist
 * Mary Campbell (Highland Mary) (1763–1786), linked romantically with Robert Burns
 * Mary Greig Campbell (1907–1989), New Zealand librarian and Quaker
 * Mary Campbell, Countess of Argyll (1628–1668)
 * Mary Maxwell Campbell (1812–1886), Scottish songwriter, composer, and poet