Louis-Onésime Loranger
Louis-Onésime Loranger, c.1870
MLA for Laval
In office 1875–1882
Preceded by	Joseph-Hyacinthe Bellerose
Succeeded by	Pierre-Évariste Leblanc
Personal details
Born	(1837-04-07)April 7, 1837 Yamachiche, Lower Canada
Died	August 18, 1917(1917-08-18) (aged 80) Saint-Hilaire (Mont-Saint-Hilaire), Quebec
Resting place	Notre Dame des Neiges Cemetery
Political party	Conservative
Relations	Thomas-Jean-Jacques Loranger, brother

Louis-Onésime Loranger (April 7, 1837 – August 18, 1917) was a Canadian lawyer, politician, and judge.

Born in Yamachiche, Lower Canada, the son of Joseph Loranger and Marie-Louise Dugal, Loranger was educated in Montreal at the Petit Séminaire de Montréal and studied law at the Collège Sainte-Marie. He was called to the Bar of the Province of Canada in 1858 and practiced law with his brothers, Thomas-Jean-Jacques and Jean-Marie. He was made a Queen's Counsel in 1881.

He was first elected to the Legislative Assembly of Quebec for the electoral district of Laval in the 1875 election. A Conservative, he was re-elected in 1881. From 1879 to 1882, he was the attorney general in the cabinet of Premier Joseph-Adolphe Chapleau. He was also a member of the Montreal City Council for the ward of Saint-Louis from 1871 to 1877. He was president of the Saint-Jean-Baptiste Society of Montreal from 1895 to 1899.

In 1882, he was appointed a judge in the Superior Court of Quebec for the district of Montreal. He retired in 1909.

• "Biography". Dictionnaire des parlementaires du Québec de 1792 à nos jours (in French). National Assembly of Quebec.
• "Louis-Onésime Loranger". Dictionary of Canadian Biography (online ed.). University of Toronto Press. 1979–2016.