The Shire of Colac Otway is a local government area in the Barwon South West region of Victoria, Australia, located in the south-western part of the state. It covers an area of 3,438 square kilometres (1,327 sq mi) and in June 2018 had a population of 21,503. It includes the towns of Apollo Bay, Beeac, Beech Forest, Birregurra, Colac, Cressy, Forrest, Johanna, Kennett River, Lavers Hill, Warrion and Wye River. It came into existence on 23 September 1994 through the amalgamation of the local government areas of City of Colac, Shire of Colac, part of the Shire of Otway and part of the Shire of Heytesbury.

Apollo Bay is a coastal town in southwestern Victoria, Australia. It is situated on the eastern side of Cape Otway, along the edge of the Barham River and on the Great Ocean Road, in the Colac Otway Shire. The town had a population of 1,790 at the 2021 census.