Mary Ryan may refer to:
Actresses Mary Ryan (actress) (1885–1948), American stage and screen actress Mary Nash (actress) (1884–1976), née Ryan, American vaudevillian, later stage/screen actress
Characters Mary Ryan a.k.a. Blue Mary, in the Fatal Fury and The King of Fighters computer game series Mary Ryan (character), in the American soap opera Ryan's Hope Mary Ryan, in the 1999 Canadian film The Divine Ryans
Sports Mary Ryan, Dublin camogie player, who played in 1964 All-Ireland Senior Camogie Championship Mary Ryan, Galway camogie player, who played in Gael Linn Cup 1981 Mary Ryan, Tipperary camogie player, who played in 2006 All-Ireland Senior Camogie Championship
Other notable people Mary Alma Ryan (1863–1929), American Roman Catholic nun Mary Ryan (academic) (1873–1961), first woman professor in Ireland or Great Britain Mary Ryan (Irish politician) (1898–1981), Irish Fianna Fáil TD for Tipperary 1944–1961 Mary A. Ryan (1940–2006), U.S. diplomat Mary P. Ryan, American historian Mary Ryan (writer), American TV writer/director Mary Perkins Ryan (1912–1993), American Catholic author, editor, and educator Mary Ryan (materials scientist), professor of materials science Mary Kate Ryan (1878–1934), Irish academic and political activist Mary Eucharia Ryan (1860–1929), Irish Loreto sister and pioneer of women's higher education Mary Ryan, who spotted Momo the Monster
See also Mary Ryan, Detective, a 1949 American crime drama Marie Ryan (disambiguation)