Mary Morgan may refer to:
* Jaye P. Morgan or Mary Margaret Morgan (born 1931), American retired popular music singer, actress and game show panelist
* Mary De Morgan (1850–1907), British author of fairytales
* Mary Morgan (infanticide) (1788–1805), Welsh servant convicted for killing her newborn child
* Mary C. Morgan (fl. 1960s–2020s), judge of the San Francisco County Superior Court and the first openly lesbian judge appointed in the United States
* Mary Jane Morgan (1823–1885), American art collector and wife of Charles Morgan
* Mary "Rae" Morgan, convicted of the manslaughter of her step-daughter Michele LeAnn Morgan
* Mary Sherman Morgan (1921–2004), American rocket fuel scientist
* Mary S. Morgan (born 1952), professor of the history of economics in the London School of Economics
* Mary DeNeale Morgan (1868–1948), American painter
* Mary Kimball Morgan (1861–1948), American educator
Provided by Wikipedia