Territorial claims in Antarctica

Seven states maintain a territorial claim on eight territories in Antarctica. These countries have tended to site their scientific observation and study facilities in Antarctica within the claimed territory.

According to Argentina and Chile, the Spanish Empire had claims on Antarctica. The capitulación (governorship) granted to the conquistador Pedro Sánchez de la Hoz explicitly included the lands south of the Straits of Magellan (Terra Australis, Tierra del Fuego). This grant established, according to Argentina and Chile, that an animus occupandi existed on the part of Spain in Antarctica. Spain's sovereignty claim over parts of Antarctica was, according to Chile and Argentina, internationally recognized with the Inter caetera bull of 1493 and the Treaty of Tordesillas of 1494. Argentina and Chile treat these treaties as legal international treaties mediated by the Catholic Church that was at that time a recognized arbiter in such matters.

The United Kingdom reasserted sovereignty over the Falkland Islands in the far South Atlantic in 1833 and maintained a continuous presence there. In 1908, the British government extended its territorial claim by declaring sovereignty over "South Georgia, the South Orkneys, the South Shetlands, and the (South) Sandwich Islands, and Graham's Land, situated in the South Atlantic Ocean and on the Antarctic continent to the south of the 50th parallel of south latitude, and lying between the 20th and the 80th degrees of west longitude". All these territories were administered as Falkland Islands Dependencies from Stanley by the Governor of the Falkland Islands. The motivation for this declaration lay in the need to regulate and tax the whaling industry effectively. Commercial operators would hunt whales in areas outside the official boundaries of the Falkland Islands and its dependencies, and there was a need to close this loophole.

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