Breakwater has several meanings, including:

• Breakwater (structure), a structure for protecting a beach or harbour
• Breakwater, Victoria, a suburb of Geelong, Victoria, Australia
• Breakwater School, a Portland, Maine, pre-school and elementary school founded in 1956
• Breakwater (Lennie Gallant album), from 1988
• Breakwater (band), a funk and soul band from the 1970s
• Breakwater Abu Dhabi Corniche

abutment, anchorage, anchorage ground, arc-boutant, arch dam, backstop, bamboo curtain, bank, bar, barrage, barrier, basin, beam, bear-trap dam, beaver dam, berth, bill, boom, breastwork, brick wall, buffer, bulkhead, bulwark, buttress, buttress pier, buttressing, cape, chersonese, cofferdam, coral reef, dam, defense, delta, dike, ditch, dock, dockage, dockyard, dry dock, earthwork, embankment, fence, flying buttress, foreland, gate, gravity dam, groin, hanging buttress, harbor, harborage, haven, head, headland, hook, hydraulic-fill dam, iron curtain, jam, jetty, jutty, landing, landing place, landing stage, leaping weir, levee, logjam, marina, milldam, moat, mole, moorings, mound, mull, naze, ness, parapet, peninsula, pier, pier buttress, point, port, portcullis, promontory, protected anchorage, quay, rampart, reef, retaining wall, road, roadblock, roads, roadstead, rock-fill dam, sandspit, seaport, seawall, shipyard, shoulder, shutter dam, slip, spit, spur, stone wall, tongue, wall, weir, wharf, wicket dam, work