The Atlantic was a passenger train operated by Via Rail, serving both Canadian and U.S. territory between Montreal, Quebec and Halifax, Nova Scotia. It was previously operated by Canadian Pacific Railway as The Atlantic Limited between Montreal and Saint John, New Brunswick. It formed part of the transcontinental service for both systems. Since its cancellation, citizen's groups in southern New Brunswick and the Eastern Townships of Quebec have periodically organized petitions or lobbied to have Via Rail Canada reinstate passenger service to this route.