Cape du Couedic is a headland in the Australian state of South Australia located on the southwest tip of Kangaroo Island in the locality of Flinders Chase.

It was named after a French naval officer, Charles Louis du Couëdic de Kergoualer [fr], by the Baudin expedition to Australia during January 1803.

[5] The cliff line which includes Cape du Couedic consists of a metamorphic rock belonging to the Kanmantoo group bedrock called Middleton Sandstone.

[8][9] Cape du Couedic was named in January 1803 by the Baudin expedition of 1800-03 in the memory of Charles Louis Chevalier du Couëdic de Kergoualer (1740–1780), a French naval officer, who commanded the frigate La Surveilante and who died in 1780 as the result of wounds received in the action of 6 October 1779 against HMS Quebec.

[13] As of 2012, the waters surrounding its shores are part of a combined restricted access and sanctuary zone located within the boundaries of the Western Kangaroo Island Marine Park.