The Shire of Mullewa was a local government area in the Mid West region of Western Australia, about 100 kilometres (62 mi) east of the city of Geraldton and about 450 kilometres (280 mi) north of the state capital, Perth. The Shire covered an area of 10,827 square kilometres (4,180 sq mi), and its seat of government was the town of Mullewa. It amalgamated with the City of Geraldton-Greenough on 1 July 2011 to become part of the City of Greater Geraldton.

The Shire of Murchison covers a large area of the Murchison sub-region of the central part of Western Australia, 300 kilometres (186 mi) northeast of Geraldton. The shire and the older 'Murchison' region and goldfield are now part of the designated Mid West region. It is Australia's second least populated local government area after the Shire of Peppermint Grove and the only one without a town.