The 91-year-old was known for her wide variety of roles in both English and French.
Born in Montreal in January 1922, she made a name for herself in Quebec and Canadian theatre as well as on the international scene, taking to the stage in New York, Chicago, Paris and Brussels.
She often travelled and performed with her husband, the celebrated actor and playwright Gratien Gélinas, who died in 1999.
"This great artist captured the heart of Quebecers through the many characters she played on television over 50 years," said Quebec's minister of culture and communications in a statement, upon learning of Oligny's death.
"Up until the end, she was the epitome of humility, a hallmark of great souls," said Maka Kotto.
Among the many television dramas she starred in, Oligny is remembered for her roles in Adieu Françoise and Rue des Pignons.
On the stage, she played a wide range of characters, from Albertine in Michel Tremblay’s Albertine en cinq temps to Maria in Anton Chekhov’s Uncle Vanya.
Oligny acted on the big screen as well, starring in Claude Jutra’s Kamouraska and André Brassard’s Le soleil se lève en retard.
The actress was named a Companion of the Order of Canada in 1996 and made an Officer of the National Order of Quebec in 1999.