Bunbury is a coastal city in the Australian state of Western Australia, approximately 175 kilometres (109 mi) south of the state capital, Perth. It is the state's third-largest city, with a population just behind that of Mandurah.
Located at the south of the Leschenault Estuary, Bunbury was established in 1836 on the orders of Governor James Stirling, and named in honour of its founder, Lieutenant (at the time) Henry Bunbury. A port was constructed on the existing natural harbour soon after, and eventually became the main port for the wider South West region. Further economic growth was fuelled by completion of the South Western Railway in 1893, which linked Bunbury with Perth.
Greater Bunbury includes four local government areas (the City of Bunbury and the shires of Capel, Dardanup, and Harvey), and extends between Yarloop in the north, Boyanup to the south and Capel to the southwest.