The Shire of Baw Baw is a local government area in Victoria, Australia, in the eastern part of the state. It covers an area of 4,031 square kilometres (1,556 sq mi) and, at the 2011 Census, had a population of 42,864. It includes the towns of Drouin, Longwarry, Neerim South, Trafalgar, Warragul and Yarragon.