Afton is a former rural municipality in the Canadian province of Prince Edward Island within Queens County.
The Municipality of Afton was originally incorporated in 1974. It incorporated as a rural municipality on January 1, 2018. On September 1, 2020, the Rural Municipality of Afton amalgamated with the rural municipalities of Bonshaw, Meadowbank, New Haven-Riverdale, and West River. The amalgamated municipality was named the Rural Municipality of West River.
Localities within Afton include Cumberland, Fairview, New Dominion, Nine Mile Creek, Rice Point, and Rocky Point.