The Shire of Dumbleyung is a local government area in the Wheatbelt region of Western Australia, about 40 kilometres (25 mi) east of Wagin and about 275 kilometres (171 mi) southeast of Perth, the state capital. The Shire covers an area of 2,540 square kilometres (981 sq mi), and is involved in grain and livestock production and various biodiversity industries including cereals, summer crops, oil mallees, yabbies, emus, poultry and trout. Its seat of government is the town of Dumbleyung.

On 1 October 1909, the Dumbleyung Road District was created. On 1 July 1961, it became a Shire following the enactment of the Local Government Act 1960.^[2]

The President and Elected Members are elected by the local community to represent the interests and needs of the community. Council is currently made up of seven (7) Councillors representing the whole of the Shire of Dumbleyung district.

As of 3 May 2003, the shire was divided into 4 wards.

• Dumbleyung Ward (3 councillors)
• North Ward (3 councillors)
• Kukerin (1 councillor)
• South Ward (2 councillors)

Previously, there were 5 wards: Central (Dumbleyung), North (Dongolocking), South (Datatine), Merilup and Kukerin.

The towns and localities of the Shire of Dumbleyung with population and size figures based on the most recent Australian census:^[3][4]

As of 2023, 57 places are heritage-listed in the Shire of Dumbleyung,^[18] of which none are on the State Register of Heritage Places.^[19]