The Township of Perth South is a lower-tier municipality in southwestern Ontario, Canada.

[3] Canada's ninth Prime Minister, Arthur Meighen, was born in Anderson, a community in Perth South.

There are smaller settlement areas known as Hamlets that include: Avonbank, Avonton, Conroy, Harmony, Prospect Hill, Rannoch, St. Pauls, Whalen Corners and Woodham.

[1] Agricultural uses represent one of the township's most significant economic and cultural assets.

[2] Perth South is served by the Stratford & District Chamber of Commerce whose mandate is to maintain and improve trade and commerce and to provide the economic, commercial, tourist, agricultural, and environmental welfare of the region.

[5] Perth South is also a part of the Southwest Economic Alliance, an organization covering much of southwestern Ontario and designed to create partnerships between local government, educational institutions, the broader public sector, and the private sector.

[7] All of Perth County is an agricultural area; mixed farming is the primary category while pork production is second.

Other businesses in Perth South include Maple Leaf Foods, Klomps Nursery, McCully's Hill Farms, C’est Bon Cheese, McLean Taylor Construction, and Hoffmeyers Mill.

[11] The township's services include public works, building and bylaw enforcement, recreation and leisure, drainage, environmental, planning, fire, economic development, and emergency management.