Brown Township is one of eleven townships in Montgomery County, Indiana, United States. As of the 2020 census, its population was 1,617 (down from 1,719 at 2010) and it contained 705 housing units.
According to the 2010 census, the township has a total area of , of which (or 99.13%) is land and (or 0.87%) is water.
(This list is based on USGS data and may include former settlements.)
The township contains these eight cemeteries: Indian Creek, Indian Creek Hill, Jones, Lydick, Maple Ridge, Old Hickory, Old Union and Wasson.
Brown Township is served by the Waveland-Brown Township Public Library.