Jackson Township is one of nine townships in Wells County, Indiana, United States. As of the 2020 census, its population was 771 (down from 837 at 2010) and it contained 310 housing units.

According to the 2010 census, the township has a total area of 35.97 square miles (93.2 km), of which 35.66 square miles (92.4 km) (or 99.14%) is land and 0.31 square miles (0.80 km) (or 0.86%) is water.

• Dillman at 40°36′37″N 85°25′44″W / 40.610322°N 85.428862°W / 40.610322; -85.428862
• Jeff at 40°36′19″N 85°21′11″W / 40.605322°N 85.353028°W / 40.605322; -85.353028
• McNatts at 40°37′28″N 85°23′28″W / 40.624489°N 85.391084°W / 40.624489; -85.391084
• Mount Zion at 40°39′01″N 85°20′05″W / 40.650323°N 85.334694°W / 40.650323; -85.334694

(This list is based on USGS data and may include former settlements.)

• Salamonie Township, Huntington County (north)
• Liberty Township (northeast)
• Chester Township (east)
• Harrison Township, Blackford County (southeast)
• Washington Township, Blackford County (south)
• Monroe Township, Grant County (southwest)
• Van Buren Township, Grant County (west)
• Jefferson Township, Huntington County (northwest)

The township contains these three cemeteries: Batson, Jones and Wright.

• Salamonie River

• Lost Lake

• Southern Wells Community Schools

• Indiana's 3rd congressional district
• State House District 82
• State Senate District 19

• United States Census Bureau 2007 TIGER/Line Shapefiles
• United States Board on Geographic Names (GNIS)
• IndianaMap

• Indiana Township Association
• United Township Association of Indiana