Angola: lowest point: Atlantic Ocean 0 m
highest point: Morro de Moco 2,620 m
Anguilla: lowest point: Caribbean Sea 0 m
highest point: Crocus Hill 65 m
Antarctica: lowest point: Bentley Subglacial Trench -2,540 m
highest point: Vinson Massif 5,140 m
note: the lowest known land point in Antarctica is hidden in the Bentley Subglacial Trench; at its surface is the deepest ice yet discovered and the world's lowest elevation not under sea water
Antigua and Barbuda: lowest point: Caribbean Sea 0 m
highest point: Boggy Peak 402 m
Arctic Ocean: lowest point: Fram Basin -4,665 m