Mary Clark

Mary Clark may refer to:

• Mary Bateman Clark (c. 1795–1840), American woman, born into slavery, who won her freedom
• Mary Clark (architect) (born 1936), Canadian architect
• Mary Clark-Glass (active since 1974), academic, medical administrator and former politician in Northern Ireland
• Mary Clark (printer) (active 1677–1696), London printer and publisher
• Mary Clark Thompson (1835–1923), philanthropist and wife of banker Frederick Ferris Thompson
• Mary E. Clark (1927–2019), American biologist
• Mary Elizabeth Clark (born 1938), main mover of the AIDS Education and Global Information System
• Mary Ellen Clark (born 1962), American diver
• Mary Higgins Clark (1927–2020), American author
• Mary Jane Clark (born 1954), American author
• Mary Kitson Clark (1905–2005), British archaeologist
• Mary Margaret Clark (1925–2003), American medical anthropologist
• Mary Mead Clark, American wife of missionary Edward Winter Clark
• Mary T. Clark (1913–2014), American historian of philosophy