Ashburton was an electoral district of the Legislative Assembly in the Australian state of Western Australia from 1890 to 1901 and again from 1989 to 1996.

In 1898, the district's main settlement was the town of Onslow; it also included various pastoral leases along the Fortescue River.

Revived for the 1989 election, Ashburton was won by Labor candidate Pam Buchanan, previously the member for Pilbara.

Buchanan, by this time an independent, resigned the seat in 1991 due to ill-health, triggering a by-election won by Labor candidate Fred Riebeling.

This Western Australian government-related article is a stub.