Mary Reed

Mary Reed may refer to:
 * Mary Reed (missionary) (1854–1943), American missionary to India
 * Mary Reed (writer) (fl. 1990s–2010s), co-writer of the John, the Lord Chamberlain series of historical mystery novels
 * Mary Lou Reed (born 1930), American politician and environmentalist
 * Mary Lynn Reed (born 1967), American mathematician, intelligence researcher, and short fiction writer