A graduate from National Theatre School of Canada in 2006, Fanny Rainville has been working in the voice industry for many years, as well as in television, theatre and screenwriting. During 5 seasons, she played Kristelle Gaumont in the popular series L'heure bleue. She was also seen in the web series Georges est mort, for which Fanny received two nominations for "best female in a supporting role" category, one at the Gémeaux 2019, as well as at the Melbourne WebFest 2019. 

Fanny is part of the cast of the comedy Survivre à ses enfants, and of C’est comme ça que je t’aime 2 on Radio-Canada (CBC), of L’homme qui aimait trop on Noovo, and she starred in the feature-lenght film Lorsque le coeur dérange (Disturbed heart - 2020) an independant movie directed by Philippe Cormier. For which she won the "Best supporting actress" award at the Oniros Film Awards in New-York.

Fanny is pursuing her artistic career as a screenwriter since 2013. In 2018, she received a grant through the Netflix-Banff/Diversity of Voices initiative, which enabled her to present a television series at the World Media Festival in June 2019. For the big screen, her short-film À travers les murs, was seen in more than twenty festivals in 2020-2021. Fanny was also nominated at the Iris prize in the "Best cast of roles" category for the movie Sashinka by Kristina Wagenbauer.

She is currently developing multiple projects for television, as well as a reality documentary project. Her first novel titled Les insoumises was published in 2022 at the Libre expression editions.