Edmond Dyonnet was born in Crest, France in 1859. Dyonnet studied in Turin with Gilardi and in Naples with Morelli. He came to Canada with his parents 1875.
By 1891 he was teaching art at the Monument National and he was elected associate of the Royal Canadian Academy of Arts in 1893, an academician in 1903. He also served as the Academy's secretary from1910-49.
He was a professor and director of the design school at the Conseil des arts et manufactures in Montréal for thirty-one years. He also taught at the École Polytechnique in Montréal from 1907-22. Dyonnet helped found Montréal's École des Beaux-Arts in 1922 and was a professor there until 1924. He also taught at McGill University from 1920-36.
He won silver medals at the exhibitions in Buffalo in 1910, and in St Louis, Missouri in 1904. In 1968 the University of Ottawa published his 'Mémoires d'un artiste Canadien'.
His paintings and drawings can be seen in the Montréal Museum of Fine Arts, the National Museum of Fine Arts of Québec, in the collection of the Power Corporation of Canada, The Museum of Fine Arts of Canada in Ottawa, The Canadian Museum of War, The Museum of Fine Arts of Ontario, Toronto, The Agnes Etherington Art Center, and the Art Gallery of Greater Victoria, British Columbia among others.
He died in Montréal in 1954.