Louis Charles Bernacchi CMG OBE (8 November 1876 – 24 April 1942) was an Australian physicist and astronomer best known for his role in several Antarctic expeditions.

[1] Following two short expeditions to Africa and the upper Amazon Basin in Peru, Bernacchi made two unsuccessful attempts to run for the House of Commons as a Liberal Party candidate, standing in Widnes in 1910.

[1] During World War I, he served in the Royal Naval Volunteer Reserve, the Admiralty in the anti-submarine division,[8] and later with the United States Navy.

[1] He remained active in scientific organisations, most notably the Royal Geographical Society, serving as a council member between 1928 and 1932.

[1] Bernacchi wrote a number of books on the Antarctic including a biography of Lawrence Oates called A Very Gallant Gentleman published in 1933, and Saga of the Discovery in 1938.

[11] The Premier of Tasmania, Jim Bacon, unveiled sculptures of Bernacchi and fellow explorers at Sullivans Cove.