Mary Webster may refer to:
Mary Webster (alleged witch), accused of witchcraft in the 1680s in Puritan Hadley, Massachusetts Mary Webster (British actress) (1935–2014), British actress Mary Webster (American actress) (1935–2017), American actress Mary Comer Webster (1928–2008), American political strategist Mary Morison Webster (1894–1980), Scottish-born novelist and poet Mary Hortense Webster (1881–1965), sculptor Mary McCallum Webster (1906–1985), British botanist Mary Clark Webster, member of the Maine House of Representatives