A polar region encompasses Antarctica.
The Antarctic ( US English [ æntˈɑrktɪk ] , UK English [ ænˈtɑrktɪk ] or [ æntˈɑrtɪk ] and [ ænˈtɑrtɪk ] or [ ænˈɑrtɪk ] ) is a polar region , specifically the region around the Earth 's South Pole , opposite the Arctic region around the North Pole . Antarctica . It contains the geographic South Pole and is situated in the Antarctic region of the Southern Hemisphere , almost entirely south of the Antarctic Circle , and is surrounded by the Southern Ocean .