Mount Magnet was an electoral district of the Legislative Assembly in the Australian state of Western Australia from 1901 to 1950.

It replaced the former pre-federation seat of Yalgoo (1897-1901) The district was based on the outback town of Mount Magnet.

Upon its creation in 1900 it included a number of other settlements on the Mullewa–Meekatharra railway, such as Yalgoo, Yoweragabbie, Lennonville, and Boogardie, as well as the remote settlements of Rothsay and Paynesville and various pastoral leases.

[1] Following the general shift to labor in 1904, the seat was held at all times by the Labor Party.

This Western Australian government-related article is a stub.