This was Canada's first war crimes trial, according to AFP dispatch.
Munyaneza, 42, had been found guilty of seven counts of war crimes, genocide and crimes against humanity for the rape, murder and torture of dozens of Tutsis and moderate Hutus in southern Rwanda from April to July 1994.
He received the maximum penalty under Canadian law - 25 years in prison before becoming eligible for parole.
The trial was the first test of a Canadian law passed in October 2000 claiming "universal jurisdiction" over the world's most horrific crimes.
Munyaneza was arrested in Toronto in 2005 after seeking asylum in Canada, which Canadian immigration officials rejected. He had fled to Cameroon after 1994 where he was exiled, before arriving in Canada in 1997.
His two-year trial heard testimony from 66 witnesses in Canada, France, Rwanda and Tanzania.
The court heard Munyaneza, the son of a wealthy Hutu beer distributor, had set up and manned roadblocks in southern Rwanda during the genocide to select Tutsis and moderate Hutu as victims based on their ethnicity or allegiances.
Quebec Superior Court judge Andre Denis had said in his ruling that Munyaneza "specifically intended to destroy the Tutsi ethnic group in Butare and in the surrounding communes".
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© Hirondelle News Agency