AIDA Cruises is a German cruise line founded in the early 1960s and organized as a wholly owned subsidiary of Costa Cruises, which in turn belongs to Carnival Corporation. Based in Rostock, Germany, AIDA Cruises caters primarily to the German-speaking market; as seagoing "club resorts", AIDA ships have on-board amenities and facilities designed to attract younger, more active vacationers. As of September 2023, the cruise line operates 11 ships.