Jackson Township is one of four townships in Blackford County, Indiana. As of the 2020 census, its population was 1,233 (down from 1,354 at 2010) and it contained 554 housing units. The township was named after Andrew Jackson, the Brevet Major General of the Battle of New Orleans and the seventh President of the United States.

According to the 2010 census, the township has a total area of 45.67 square miles (118.3 km), of which 45.56 square miles (118.0 km) (or 99.76%) is land and 0.11 square miles (0.28 km) (or 0.24%) is water. Lake Placid is in this township. Lick Creek runs through the township.

• Dunkirk (southeast edge)

• Converse (originally called Crumley's Crossing)
• Millgrove
• Trenton (Post Office called Priam)

• SR 26
• SR 167

The township contains at least seven cemeteries: Buckles, Goghnauer, Mount Tabor, Reeves, South Trenton, Wayman and West Trenton.

• "Jackson Township, Blackford County, Indiana". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved September 24, 2009.
• A History of Blackford County, Indiana : with historical accounts of the county, 1838-1986 [and] histories of families who have lived in the county. Hartford City, Indiana: Blackford County Historical Society. 1986. p. 302. OCLC 15144953.
• Biographical and historical record of Jay and Blackford Counties, Indiana: Containing ... portraits and biographies of some of the prominent men of the state : engravings of prominent citizens in Jay and Blackford Counties, with personal histories of many of the leading families and a concise history of Jay and Blackford Counties and their cities and villages. Chicago: The Lewis Publishing Company. 1887. p. 901. OCLC 15560416. Archived from the original on August 7, 2011.
• United States Census Bureau cartographic boundary files

• Indiana Township Association
• United Township Association of Indiana