Prospect Township is a township in Butler County, Kansas, USA. As of the 2000 census, its population was 2,033. It is where El Dorado Correctional Facility, a maximum security prison, is located.

Prospect Township was organized in 1872.

Prospect Township covers an area of 84.38 square miles (218.5 km) and contains no incorporated settlements. According to the USGS, it contains four cemeteries: Economy, Foster, Pontiac and Sherman. The streams of Bemis Creek, Bird Creek, Harrison Creek, Lower Branch, Satchel Creek, Shady Creek and Upper Branch run through this township.

Prospect Township contains one airport or landing strip, Patty Field.

• USGS Geographic Names Information System (GNIS)

• City-Data.com