The Ross Sea party was a component of Sir Ernest Shackleton's 1914–1917 Imperial Trans-Antarctic Expedition. Its task was to lay a series of supply depots across the Great Ice Barrier from the Ross Sea to the Beardmore Glacier, along the polar route established by earlier Antarctic expeditions. The expedition's main party, under Shackleton, was to land near Vahsel Bay on the Weddell Sea on the opposite coast of Antarctica, and to march across the continent via the South Pole to the Ross Sea. As the main party would be unable to carry sufficient fuel and supplies for the whole distance, their survival depended on the Ross Sea party setting up supply depots, which would cover the final quarter of their journey.

Sir Ernest Henry Shackleton was an Anglo-Irish Antarctic explorer who led three British expeditions to the Antarctic. He was one of the principal figures of the period known as the Heroic Age of Antarctic Exploration.