Erebus Crater is a crater on Mars that will be visited by Opportunity rover on its trek to the much larger Victoria Crater. It is about 350 meters wide, twice as large as Endurance Crater.

Erebus is located roughly 2,500 meters south of Vostok Crater, which was previously visited by Opportunity. It is surrounded by what scientists are describing as "etched terrain", where more rocks may peak out of the floor of Meridiani Planum.