Washington Township is one of thirteen townships in Parke County, Indiana, United States.

As of the 2020 census, its population was 1,412 and it contained 478 housing units.

[2] The Sanitorium Covered Bridge was listed on the National Register of Historic Places in 1978.

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

The township contains these seven cemeteries: Barnes, Bethany, Buchanan, Elder, Overman, Poplar and Rawlings.