Johanne Garneau is a Canadian actress and voice actress, born on August 21, 1954, in the province of Quebec. She has built a substantial career spanning several decades, working extensively in both on-screen roles and the dubbing of animated films and television series for the French Canadian market.

Garneau's voice acting work is particularly prominent. She is well-known for voicing several characters in the Quebec French versions of long-running animated series such as The Simpsons and American Dad. She also contributed her voice to the popular children's series Caillou, which aired for 230 episodes. In the realm of feature films, her voice can be heard in many animated and live-action productions. Notably, she voiced the character Grande-Tante Charlotte in the French Canadian version of the 2017 animated film Mary and The Witch's Flower. Her other significant voice roles include Roz in Monsters, Inc., Mittens in Bolt, the Witch in Brave, Gerda in Frozen, Tala in Moana, and Nostalgia in Inside Out 2. For Disney films, her work also includes roles in 101 Dalmatians 2: Patch's London Adventure, Atlantis: The Lost Empire, Alice in Wonderland, and Captain America: Civil War.

Beyond voice work, Garneau has also appeared in live-action productions. Her television credits include a principal role as Olivier in Olliver's Adventures, as Captain Flamingo in Capitaine Flamingo, and as Derrick in Mega Babies. She also appeared in the series Belphégor as Sarah Kozminsky. Her film appearances include roles in Suzanne et Chantal, Matthias & Maxime, and the television series Des dames de cœur.

Throughout her career, Garneau has frequently collaborated with a number of other prominent voice actors in the Quebec dubbing industry. Her most frequent collaborators include Richard Darbois, Luq Hamet, Sebastian Dhavernas, Hubert Gagnon, and Gilbert Lachance, with whom she has worked on multiple projects.