Quest was a low-powered, schooner-rigged steamship that sailed from 1917 until sinking in 1962, best known as the polar exploration vessel of the Shackleton–Rowett Expedition of 1921–1922. It was aboard this vessel that Sir Ernest Shackleton died on 5 January 1922 while in harbour in South Georgia. Prior to and after the Shackleton–Rowett Expedition, Quest operated in commercial service as a seal-hunting vessel or "sealer". Quest was also the primary expedition vessel of the British Arctic Air Route Expedition to the east coast of the island of Greenland in 1930–1931.

The Shackleton–Rowett Expedition (1921–22) was Sir Ernest Shackleton's last Antarctic project, and the final episode in the Heroic Age of Antarctic Exploration.