Montgomery Township is one of eleven townships in Jennings County, Indiana, USA.

As of the 2020 census, its population was 950 (down from 978 at 2010[1]) and it contained 416 housing units.

[2] According to the 2010 census, the township has a total area of 20.23 square miles (52.4 km2), of which 20.21 square miles (52.3 km2) (or 99.90%) is land and 0.01 square miles (0.026 km2) (or 0.05%) is water.

[1] The streams of Bear Creek, Davis Branch and Little Bear Creek run through this township.

The township contains one cemetery, Hopewell.