Charles Napier Sturt was a British officer and explorer of Australia, and part of the European exploration of Australia. He led several expeditions into the interior of the continent, starting from Sydney and later from Adelaide. His expeditions traced several of the westward-flowing rivers, establishing that they all merged into the Murray River, which flows into the Southern Ocean. He was searching to prove his own passionately held belief that an "inland sea" was located at the centre of the continent. He reached the rank of Captain, served in several appointed posts, and on the Legislative Council.

European land exploration of Australia deals with the opening up of the interior of Australia to European settlement which occurred gradually throughout the colonial period, 1788–1900. A number of these explorers are very well known, such as Burke and Wills who are well known for their failed attempt to cross the interior of Australia, as well as Hamilton Hume and Charles Sturt.