Théodore Robitaille, PC (29 January 1834 â" 17 August 1897) was a Canadian physician, politician, and the fourth Lieutenant Governor of Quebec.
Born in Varennes, Lower Canada, the son of Louis-Adolphe Robitaille (pronounced "ro-buh-ty") and Marie-Justine Monjeau, he was baptized as Louis-François-Christophe-Théodore. A physician, he graduated from McGill College in 1858 and settled in New Carlisle, Quebec. In 1861, he was elected to the Legislative Assembly of the Province of Canada for the riding of Bonaventure. In 1867, he was elected to the Canadian House of Commons. A Conservative he was re-elected in 1872, an 1873 ministerial by-election, 1874, and 1878. In 1873, he was appointed Receiver General.
In 1871, he was elected to the Legislative Assembly of Quebec in Bonaventure and served until 1874 when holding a federal and provincial seat was abolished. From 1879 to 1884, he was the Lieutenant Governor of Quebec. Notably, during his tenure he commissioned Calixa Lavallée and Sir Adolphe-Basile Routhier to prepare the music and French lyrics to what would become Canada's national anthem, O Canada. In 1885, he was appointed to the Senate representing the senatorial division of Gulf, Quebec. He served until his death in New Carlisle, Quebec in 1897.