HMAT Warilda (His Majesty's Australian Transport) was a 7713-ton vessel, built by William Beardmore and Company in Glasgow as the SS Warilda for the Adelaide Steamship Company. She was designed for the East-West Australian coastal service, but following the start of the First World War, she was converted into a troopship and later, in 1916, she was converted into a hospital ship. Her identical sister ships, also built by William Beardmore and Company, were SS Wandilla (1912) and SS Willochra (1913).