Jackson Township is one of twelve townships in Jay County, Indiana, United States.

As of the 2020 census, its population was 991 (up from 965 at 2010[2]) and it contained 316 housing units.

[3] According to the 2010 census, the township has a total area of 36.37 square miles (94.2 km2), of which 36.34 square miles (94.1 km2) (or 99.92%) is land and 0.02 square miles (0.052 km2) (or 0.05%) is water.

[2] The streams of Bear Creek, Dunkirk Drain, Haskin Run, Wall Run and Wolf Creek run through this township[citation needed].

The township contains one cemetery, Gravel Hill.