Walnut Township is one of eleven townships in Montgomery County, Indiana, United States.

As of the 2020 census, its population was 1,303 (down from 1,394 at 2010[2]) and it contained 568 housing units.

[3] According to the 2010 census, the township has a total area of 36.41 square miles (94.3 km2), all land.

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

The township contains these two cemeteries: New Ross and Pisgah.