Karl Bélanger (born 1975) is the President of the Douglas-Coldwell Foundation. He was the interim National Director of the New Democratic Party (NDP) of Canada from January 23, 2016 to September 12, 2016. He was principal secretary to NDP Leader Tom Mulcair during his tenure as Leader of the Official Opposition. Bélanger was a member of NDP Leader Jack Layton's team, serving as senior press secretary. He also was his principal secretary for Quebec in spring 2009, ahead of the Quebec Orange Crush. He remained senior press secretary under the interim leadership of Nycole Turmel.