Thompson Peninsula is a peninsula

Peninsula

A peninsula is a piece of land that is bordered by water on three sides but connected to mainland. In many Germanic and Celtic languages and also in Baltic, Slavic and Hungarian, peninsulas are called "half-islands"....

 3 nautical miles (6 km) long forming the north side of the entrance to Fournier Bay

Fournier Bay

Fournier Bay is a bay 8 nautical miles long and 3 nautical miles wide, indenting the northeast coast of Anvers Island immediately west of Briggs Peninsula, in the Palmer Archipelago. Probably first seen by a German expedition 1873-74, under Dallmann. Charted by the French Antarctic Expedition,...

, on Anvers Island

Anvers Island

Anvers Island or Antwerp Island or Antwerpen Island or Isla Amberes is a high, mountainous island long, which is the largest feature in the Palmer Archipelago, lying southwest of Brabant Island at the southwestern end of the group. Anvers Island is located at...

 in the Palmer Archipelago

Palmer Archipelago

Palmer Archipelago, also known as Antarctic Archipelago, Archipiélago Palmer, Antarktiske Arkipel or Palmer Inseln, is a group of islands off the northwestern coast of the Antarctic Peninsula....

. Surveyed by the Falkland Islands Dependencies Survey (FIDS) in 1955-57, and named by the United Kingdom Antarctic Place-Names Committee (UK-APC) for John W. Thompson

John W. Thompson

John W. Thompson is a former vice-president at IBM and the former Chief Executive Officer of Symantec Corporation. He is presently the Chairman of the Board of Directors of Symantec Corporation and CEO of Virtual Instruments...

 of FIDS, general assistant and mountaineer at Arthur Harbor

Arthur Harbor

Arthur Harbour is a small harbour entered between Bonaparte Point and Norsel Point on the southwest coast of Anvers Island in the Palmer Archipelago. The harbour is located at ....

in 1956 and leader at that station in 1957.