Stirton is an unincorporated rural community in Mapleton Township, Wellington County, Ontario, Canada.

The settlement was named for David Stirton, a member of the House of Commons from 1857 to 1876.

[4] A post office operated from 1863 to 1910, and local merchant John Sanderson was the first postmaster.

[3] During the early 1950s, construction began on a dam located 7 km (4.3 mi) south of Stirton, across the Conestogo River.

The completed dam would flood a large area southwest of Stirton, and create Conestogo Lake.