Grand Dérangement is an Acadian folk band from southwestern Nova Scotia whose style shows influence of Acadian, American, Celtic, and French music. The band's name, literally, "great disturbance", comes from the French name for the Great Expulsion of the Acadians by the British in 1755, a major turning point in Acadian history. Grand Dérangement has toured in the US, Canada, France, Switzerland, and Germany.

Members Briand Melanson, Daniel Leblanc, Jean-Pascal Comeau, and Charles Robicheau have collaborated with musicians such as Luc Tardif, Nathalie Geddry, Jeanne Doucette-Currie, Jean-Étienne Sheehy, and Alphonse Melanson, and have performed at events such as Le Gala des Prix Éloize, Le Gala de la Chanson de la Nouvelle-Écosse, and The Church Point Tsunami Fundraising Concert.