Stonington (formerly Stonnington) is a private residence and former Australian Government House located in the Melbourne suburb of Malvern, at 336 Glenferrie Road. The house was built for John Wagner, a partner in Cobb and Co coaches. Stonington gave its name to the City of Stonnington, a Melbourne municipality.
John Wagner, a partner in Cobb and Co coaches, built the house in 1890. The house was designed in the Italianate Victorian style by architect Charles D'Ebro. The house was named for the birthplace of Wagner's wife, Mary, in Stonington, Connecticut, USA. Wagner and his family lived in the house until his death in 1901.
At the Federation of Australia in 1901 Melbourne became the location of government, and Government House, Melbourne became the home of the Governor-General and Stonnington Mansion was acquired by the Victorian Government as a home for the Governor of Victoria in 1928. The house was maintained as Victoria's Government House until 1931. During that time the house hosted many famous guests, including Dame Nellie Melba, the Duke and Duchess of York (later King George VI and Queen Elizabeth), the Prince of Wales (later King Edward VIII), Lord and Lady Baden-Powell, Lord Kitchener, Sir John Monash, Keith Murdoch, and Ernest Shackleton.