South Huron is a municipality in the Canadian province of Ontario, located in the southern part of Huron County. It was formed by amalgamation of the townships of Stephen and Usborne with the Town of Exeter in 2001, in an Ontario-wide municipal restructuring imposed by the provincial government.

Communities in South Huron include:

• Centralia
• Crediton
• Dashwood
• Elimville
• Exeter
• Huron Park
• Kirkton
• Mount Carmel
• Shipka
• Winchelsea
• Woodham

Historical population

Year	Pop.	±%
1996	10,229	—
2001	10,019	−2.1%
2006	9,982	−0.4%
2011	9,945	−0.4%
2016	10,096	+1.5%

In the 2021 Census of Population conducted by Statistics Canada, South Huron had a population of 10,063 living in 4,339 of its 4,722 total private dwellings, a change of -0.3% from its 2016 population of 10,096. With a land area of 425.12 km (164.14 sq mi), it had a population density of 23.7/km (61.3/sq mi) in 2021.

The community is home to Centralia/James T. Field Memorial Aerodrome, a public airport and former British Commonwealth Air Training Plan base. The airport has no schedule airline service (closest is London International Airport), serving only private general aviation aircraft. The airfield host a company that modifies private jets.

Ontario Highway 4 is the main road serving South Huron, which connects with Ontario Highway 401 and Ontario Highway 402 in London, Ontario.

Policing in South Huron served via Ontario Provincial Police Clinton Detachment.

South Huron Fire Department is a mix of full-time and volunteers at three fire stations.

Huron County EMS serves South Huron from their Exeter base.

• List of townships in Ontario

• Official website