Joan Beatty is a Canadian politician. She was the Saskatchewan New Democratic Party (NDP) member of the Legislative Assembly of Saskatchewan for the constituency of Cumberland. On January 3, 2008 she was appointed the Liberal Party of Canada's candidate for the Canadian House of Commons in Desnethé—Missinippi—Churchill River for the March 17, 2008 by-election.However, she lost the federal by-election to Conservative candidate Rob Clarke.