Joseph-Georges-Gilles-Claude Lamontagne PC OC CQ CD (French: [ʒozɛf ʒɔʁʒ ʒil klod lamɔ̃taɲ]; April 17, 1919 – June 14, 2016) was a Canadian politician and the 24th Lieutenant Governor of Quebec.
He became a member of the Rotary Club of Quebec City with his partner and neighbour Jean Poliquin.
He held that post until he won a seat in the House of Commons of Canada as a Liberal Party candidate in a 1977 by-election.
In 1984, he left politics to accept the position of Lieutenant-Governor of Quebec, and served as the province's viceroy until his retirement in 1990.
In 2000, he was made a Knight of the National Order of Quebec and in 2005, a member of l'Ordre des Grands Québécois.