James Douglas Manly (born 29 October 1932) is a former Canadian politician who served as the Member of Parliament (MP) for Cowichan—Malahat—The Islands from 1980 to 1988.

[5] Manly also unsuccessfully attempted to enter British Columbia politics for the NDP in 1969 at the provincial Prince Rupert riding.

He has remained active in peace and social justice issues and has engaged in Central American solidarity work on behalf of the United Church.

[7] Manly supported Svend Robinson's unsuccessful bid to win the NDP's federal leadership convention in 1995[8] and Jack Layton's successful candidacy in 2003.

[11] His son, Paul Manly, initially sought the NDP nomination for Nanaimo—Ladysmith in the 2015 election but was rejected by the party's federal executive for publicly criticizing the NDP because the party did not advocate on behalf of his father Jim when the former MP was detained for four days by the Israeli military in 2012.