Ripley Township is one of twelve townships in Rush County, Indiana. As of the 2020 census, its population was 2,035 and it contained 891 housing units.
The County Line Bridge, Maurice W. Manche Farmstead, and Walnut Ridge Friends Meetinghouse are listed on the National Register of Historic Places.
According to the 2010 census, the township has a total area of , of which (or 99.50%) is land and (or 0.50%) is water.
(This list is based on USGS data and may include former settlements.)