SS Zealandia, nicknamed Z (or "Zed") was a historically significant Australian cargo and passenger ship. It served as a troopship in both World War I and World War II. Zealandia transported the ill-fated Australian 8th Division. Its crew were the last Allied personnel to see HMAS Sydney, which was lost with all hands in 1941. Zealandia was sunk in the air raids on Darwin of 19 February 1942.