Mary King

Mary King may refer to:


 * Mary King (merchant) (c. 1590–1644), Scottish merchant and burgess
 * Mary King's Close, street in Edinburgh, Scotland, named after the above
 * Mary King, née Alsop (1769–1819), American wife of Senator Rufus King
 * Mary King, white bride of African-American professor William G. Allen (1853)
 * Mary King (teacher) (1884–1967), New Zealand teacher, principal, businesswoman, and political activist
 * Mary Lou King (born 1929), American environmental activist, educator, and writer
 * Mary King (political scientist) (born 1940), American professor at the University of Peace, author, and non-violence activist
 * Mary King (equestrian) (born 1961), British equestrian and three-time Olympic medallist
 * Mary King (economist), Trinidad and Tobago economist and senator