The Shire of Collie is a local government area in the South West region of Western Australia, about east of Bunbury and about south of the state capital, Perth. The Shire covers an area of , and its seat of government is the town of Collie.
The Shire of Collie originated in the amalgamation of the Municipality of Collie (1901) and the Collie Road District (1900) to form the Collie Coalfields Road District on 2 March 1951. It was declared a shire and named the Shire of Collie with effect from 1 July 1961 following the passage of the Local Government Act 1960, which reformed all remaining road districts into shires.
The Shire of Collie is located on the traditional land of the Kaniyang and Wiilman people of the Noongar nation.
The shire is no longer divided into wards and the eleven councillors sit at large.
The towns and localities of the Shire of Collie with population and size figures based on the most recent Australian census:
As of 2023, 198 places are heritage-listed in the Shire of Collie, of which eight are on the State Register of Heritage Places, among them Wellington Dam.