Marcelle Gauvreau (28 February 1907 – 16 December 1968) was a Canadian botanist who took a special interest in natural history education for children.

[1] In 1930, the newspaper Le Devoir, encouraged by the prominent botanist Marie-Victorin Kirouac, launched a botanical contest.

[1] The following year, Gauvreau moved over to the Botanical Institute for further study under Kirouac, who considered her one of the most brilliant students in the school.

[1] During her graduate studies, she also completed an exhaustive bibliography of Kirouac's writings and worked on the glossary and index of his magnum opus, La Flore laurentienne (The Laurentian Flora), the first comprehensive record of all plant species indigenous to southern Quebec.

[1] Students attended for one hour a week, and the emphasis was on developing observational and field-work skills through direct contact with living plants and animals.

[1] In 1943, Gauvreau had a radio program for young children on which she told stories about the natural world using the pseudonym "La Fée des fleurs" (Fairy of the Flowers).

[4] She has been portrayed by Mylène Mackay in two films centring on her relationship with Kirouac, Forgotten Flowers (Les fleurs oubliées) by André Forcier in 2019[5] and Tell Me Why These Things Are So Beautiful (Dis-moi pourquoi ces choses sont si belles) by Lyne Charlebois in 2023.