Marjolaine Rossit is a French rower. She won a gold medal at the 2004 World Rowing Championships on the Lake of Banyoles in Catalonia, Spain, in the women's four event.
Marjolaine Boutin-Sweet is a Canadian anthropologist, unionist, and politician, who was first elected to the House of Commons of Canada in the 2011 election. She represented the electoral district of Hochelaga as a member of the New Democratic Party. From November 2015 to October 2019, she was also the NDP's Whip. She did not run for re-election in 2019.