Middle Island may refer to:
Australia Middle Island (South Australia), South Australia Middle Island (Warrnambool), south-western Victoria Western Australia: Middle Island (Lacepede Islands) Middle Island (King Sound) Middle Island (Barrow Island) Middle Island (Houtman Abrolhos) Middle Island (Western Australia)
Canada Middle Island (Lake Erie), in Ontario, the southernmost point of land in Canada, part of Point Pelee National Park
New Zealand Ātiu or Middle Island, New Zealand, formerly known as Middle Island Middle Island, archaic 19th century name for New Zealand's South Island
United States Middle Island (West Virginia), on the Ohio River Middle Island, New York, settlement on Long Island Middle Island (Lake Huron), Michigan island in Lake Huron
Elsewhere Middle Island, Falkland Islands Middle Island, Hong Kong, off Repulse Bay on southern Hong Kong Island Middle Island, Tristan da Cunha, small British island in the South Atlantic Ocean Passport Island, artificial island located on the Bahrain–Saudi Arabia border also called Middle Island
See also Middle Brother (disambiguation)