Captain Charles Napier Sturt (28 April 1795 – 16 June 1869) is a British explorer of Australia, and part of the European exploration of Australia.

He leads several expeditions into the interior of the continent, starting from both Sydney and later from Adelaide.

His expeditions trace several of the westward-flowing rivers, establishing that they all merge into the Murray River.

He is searching to determine if there was an "inland sea".