The Aitcho Islands (‘Aitcho’ standing for ‘H.O.’ i.e. ‘Hydrographic Office’) are a group of minor islands in the north entrance to English Strait separating Greenwich Island and Robert Island in the South Shetland Islands, Antarctica, which are situated between Dee Island to the south and Table Island to the north. The islands were mapped in 1935 during the oceanographic investigations carried out by the Discovery Committee, and named after the Hydrographic Office of the UK Admiralty. Among the bird species found on the island are chinstrap and gentoo penguins, Southern giant petrels, and skuas. Southern elephant seals are among the larger life forms. There are also a wide variety of lichens and mosses reported.