Warren Township is one of thirteen townships in Putnam County, Indiana. As of the 2020 census, its population was 3,408 (down from 3,929 at 2010) and it contained 552 housing units.
The Putnamville Presbyterian Church was listed on the National Register of Historic Places in 1984.
According to the 2010 census, the township has a total area of , of which (or 99.86%) is land and (or 0.14%) is water.
(This list is based on USGS data and may include former settlements.)