Colchester South Township was a former incorporated township and is now a geographic township located in Essex County in Southwestern Ontario, Canada. Located on Lake Erie, the incorporated township comprised the towns of Colchester and Harrow. It was amalgamated into the Town of Essex in 1999.
- "Colchester". Geographical Names Data Base. Natural Resources Canada. Retrieved 2014-04-11.
- "Townships of North and South Colchester" (JPG). Canadian County Atlas Project. McGill University. 2001. Retrieved 2014-04-11.
- Restructured municipalities - Ontario map #6 (Map). Restructuring Maps of Ontario. Ontario Ministry of Municipal Affairs and Housing. 2006. Retrieved 2014-04-11.