The Shire of Tiaro was a local government area in the Wide Bay–Burnett region of Queensland, Australia, between the regional cities of Gympie and Hervey Bay about 220 kilometres north of the state capital, Brisbane. The shire covered an area of 2,185.3 square kilometres, and existed as a local government area from 1879 until 2008, when it was dissolved and split between two new local government areas, the Gympie Region and the Fraser Coast Region.