Georges Bank is a large elevated area of the sea floor which separates the Gulf of Maine from the Atlantic Ocean and is situated between Cape Cod, Massachusetts and Cape Sable Island, Nova Scotia .

Georges Bank is oval shaped and measures approximately 240 kilometres in length by 120 kilometres in width, making it larger in area than the state of Massachusetts. Located 100 kilometres offshore, Georges Bank is part of the continental shelf and during the Wisconsin Glaciation was actually part of the North American mainland. Now submerged, its depths range from several metres to several dozen metres, placing almost the entire bank fully 100 metres (or more) shallower than the Gulf of Maine to the north.

Georges Bank is the most westward of the great Atlantic fishing banks - those now-submerged portions of the North American mainland which now comprise the continental shelf running from the Grand Banks of Newfoundland to Georges.

Georges Bank, while not having the most productive fishery in the world (the Grand Banks takes this claim), has great prominence in that it is probably the most geographically accessible of all the fishing banks in the North Atlantic. Lying adjacent to New England's famous seaports, Georges Bank is single-handedly responsible for the development of coastal fisheries in towns such as Gloucester, Massachusetts and Yarmouth, Nova Scotia.

During the 1960s and 1970s, oil exploration companies determined that the seafloor beneath Georges Bank posesses untold petroleum reserves, however both Canada and the United States agreed to a moratorium on exploration and production activities in lieu of conservation of its waters for the fisheries.

The decision by Canada and the United States to declare an Exclusive Economic Zone (EEZ) of 200 nautical miles in the late 1970s led to overlapping EEZ claims on Georges Bank and resulted in quickly deteriorating relations between fishermen from both countries who claimed the fishery resources for each respective nation. In recognition of the controversy, both nations agreed in 1979 to refer the question of maritime boundary delimitation to the International Court of Justice at The Hague in The Netherlands. Following five years of hearings and consultation, the ICJ delivered its decision in 1984 which split the maritime boundary in the Gulf of Maine between both nations out to the 200 NM limit, giving the bulk of Georges Bank to the United States. Canada's portion of the Gulf of Maine now includes the easternmost portion of Georges Bank.