Marilyn Churley (born May 7, 1948) is a former politician in Ontario, Canada. She was a New Democratic member of the Legislative Assembly of Ontario from 1990 to 2005 who represented the downtown Toronto ridings of Riverdale and Toronto—Danforth. She served as a cabinet minister in the Bob Rae government. In opposition she served as her party's critic for the Environment, Women's Issues and Democratic Renewal. She resigned from the legislature to run for the federal New Democratic Party.