Olivier Robitaille (December 3, 1811 – November 3, 1896) was a physician and businessman in Lower Canada.
He was born in Quebec City in 1811, the son of carpenter Étienne Robitaille and his wife Marie Moisan.
He studied at the Petit Séminaire de Québec and later trained in medicine with Joseph Morrin, working as an intern at the Marine and Emigrant Hospital.
After the death of his first wife, he married Charlotte-Adélaïde Boucher dit Verchères de Boucherville, the widow of lawyer Pierre-Adolphe-Auguste Quesnel, on October 26, 1859.
In 1878, he was named a knight of the Order of Saint Silvester by Pope Pius IX.