Réginald Charles Gagnon, known as Cayouche (born 1948), is an Acadian singer-songwriter of Acadian French country music. He was born in Moncton, New Brunswick on the eastern coast of Canada.
His nickname comes from the United States. He says that people would tell him: "t’es pas Acayen t’es Acayouche", meaning "you're not Acadian, you're Acayouche". "Acayouche" later became "Cayouche"